398841551504 has 40 divisors (see below), whose sum is σ = 865789966848. Its totient is φ = 176391838080.

The previous prime is 398841551503. The next prime is 398841551513. The reversal of 398841551504 is 405155148893.

It is a super-2 number, since 2×398841551504² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398841551503) 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, 30617072 + ... + 30630095.

Almost surely, 2^398841551504 is an apocalyptic number.

It is an amenable number.

398841551504 is an abundant number, since it is smaller than the sum of its proper divisors (466948415344).

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

398841551504 is a wasteful number, since it uses less digits than its factorization.

398841551504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61247223 (or 61247217 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 53.

The spelling of 398841551504 in words is "three hundred ninety-eight billion, eight hundred forty-one million, five hundred fifty-one thousand, five hundred four".