423473985 has 36 divisors (see below), whose sum is σ = 806827476. Its totient is φ = 205318080.

The previous prime is 423473977. The next prime is 423473989. The reversal of 423473985 is 589374324.

It can be written as a sum of positive squares in 2 ways, for example, as 92852496 + 330621489 = 9636^2 + 18183^2 .

It is not a de Polignac number, because 423473985 - 2³ = 423473977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 423473985.

It is not an unprimeable number, because it can be changed into a prime (423473989) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33442 + ... + 44331.

Almost surely, 2^423473985 is an apocalyptic number.

423473985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423473985 is a deficient number, since it is larger than the sum of its proper divisors (383353491).

423473985 is a wasteful number, since it uses less digits than its factorization.

423473985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77806 (or 77792 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 423473985 is about 20578.4835447124. The cubic root of 423473985 is about 750.9463520548.

The spelling of 423473985 in words is "four hundred twenty-three million, four hundred seventy-three thousand, nine hundred eighty-five".