423505899 has 6 divisors (see below), whose sum is σ = 611730756. Its totient is φ = 282337260.

The previous prime is 423505897. The next prime is 423505913. The reversal of 423505899 is 998505324.

It is not a de Polignac number, because 423505899 - 2¹ = 423505897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423505897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23528097 + ... + 23528114.

It is an arithmetic number, because the mean of its divisors is an integer number (101955126).

Almost surely, 2^423505899 is an apocalyptic number.

423505899 is a deficient number, since it is larger than the sum of its proper divisors (188224857).

423505899 is a wasteful number, since it uses less digits than its factorization.

423505899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47056217 (or 47056214 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 423505899 is about 20579.2589516727. The cubic root of 423505899 is about 750.9652159447.

The spelling of 423505899 in words is "four hundred twenty-three million, five hundred five thousand, eight hundred ninety-nine".