398402379500 has 24 divisors (see below), whose sum is σ = 870110797920. Its totient is φ = 159360951600.

The previous prime is 398402379493. The next prime is 398402379521. The reversal of 398402379500 is 5973204893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398401880 + ... + 398402879.

It is an arithmetic number, because the mean of its divisors is an integer number (36254616580).

Almost surely, 2^398402379500 is an apocalyptic number.

It is an amenable number.

398402379500 is an abundant number, since it is smaller than the sum of its proper divisors (471708418420).

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

398402379500 is a wasteful number, since it uses less digits than its factorization.

398402379500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796804778 (or 796804766 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 398402379500 in words is "three hundred ninety-eight billion, four hundred two million, three hundred seventy-nine thousand, five hundred".