423887085 has 12 divisors (see below), whose sum is σ = 734737692. Its totient is φ = 226073088.

The previous prime is 423887083. The next prime is 423887117. The reversal of 423887085 is 580788324.

423887085 is a `hidden beast` number, since 423 + 88 + 70 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 180714249 + 243172836 = 13443^2 + 15594^2 .

It is not a de Polignac number, because 423887085 - 2¹ = 423887083 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 9419713 = 423887085 / (4 + 2 + 3 + 8 + 8 + 7 + 0 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 423887085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423887083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4709812 + ... + 4709901.

It is an arithmetic number, because the mean of its divisors is an integer number (61228141).

Almost surely, 2^423887085 is an apocalyptic number.

423887085 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423887085 is a deficient number, since it is larger than the sum of its proper divisors (310850607).

423887085 is a wasteful number, since it uses less digits than its factorization.

423887085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9419724 (or 9419721 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 423887085 is about 20588.5182808283. The cubic root of 423887085 is about 751.1904560860.

The spelling of 423887085 in words is "four hundred twenty-three million, eight hundred eighty-seven thousand, eighty-five".