423899207928 has 64 divisors (see below), whose sum is σ = 1345711776000. Its totient is φ = 121114058976.

The previous prime is 423899207903. The next prime is 423899207957. The reversal of 423899207928 is 829702998324.

423899207928 is a `hidden beast` number, since 42 + 389 + 9 + 207 + 9 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 140176798 + ... + 140179821.

It is an arithmetic number, because the mean of its divisors is an integer number (21026746500).

Almost surely, 2^423899207928 is an apocalyptic number.

It is an amenable number.

423899207928 is an abundant number, since it is smaller than the sum of its proper divisors (921812568072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423899207928 is a wasteful number, since it uses less digits than its factorization.

423899207928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280356641 (or 280356631 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 423899207928 in words is "four hundred twenty-three billion, eight hundred ninety-nine million, two hundred seven thousand, nine hundred twenty-eight".