399928329500 has 96 divisors (see below), whose sum is σ = 1022568333696. Its totient is φ = 133773888000.

The previous prime is 399928329419. The next prime is 399928329533. The reversal of 399928329500 is 5923829993.

It is a self number, because there is not a number n which added to its sum of digits gives 399928329500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1249979 + ... + 1536978.

It is an arithmetic number, because the mean of its divisors is an integer number (10651753476).

Almost surely, 2^399928329500 is an apocalyptic number.

It is an amenable number.

399928329500 is an abundant number, since it is smaller than the sum of its proper divisors (622640004196).

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

399928329500 is a wasteful number, since it uses less digits than its factorization.

399928329500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787024 (or 2787012 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 59.

The spelling of 399928329500 in words is "three hundred ninety-nine billion, nine hundred twenty-eight million, three hundred twenty-nine thousand, five hundred".