398837996 has 24 divisors (see below), whose sum is σ = 717912720. Its totient is φ = 193760000.

The previous prime is 398837993. The next prime is 398838007. The reversal of 398837996 is 699738893.

It is not an unprimeable number, because it can be changed into a prime (398837993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36320 + ... + 46008.

It is an arithmetic number, because the mean of its divisors is an integer number (29913030).

Almost surely, 2^398837996 is an apocalyptic number.

It is an amenable number.

398837996 is a deficient number, since it is larger than the sum of its proper divisors (319074724).

398837996 is a wasteful number, since it uses less digits than its factorization.

398837996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9985 (or 9983 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 62.

The square root of 398837996 is about 19970.9287715920. The cubic root of 398837996 is about 736.0921311691.

The spelling of 398837996 in words is "three hundred ninety-eight million, eight hundred thirty-seven thousand, nine hundred ninety-six".