398887887952 has 40 divisors (see below), whose sum is σ = 774098150976. Its totient is φ = 199120859136.

The previous prime is 398887887949. The next prime is 398887887967. The reversal of 398887887952 is 259788788893.

It is a super-2 number, since 2×398887887952² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 35005968 + ... + 35017360.

Almost surely, 2^398887887952 is an apocalyptic number.

It is an amenable number.

398887887952 is a deficient number, since it is larger than the sum of its proper divisors (375210263024).

398887887952 is a wasteful number, since it uses less digits than its factorization.

398887887952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14755 (or 14749 counting only the distinct ones).

The product of its digits is 3901685760, while the sum is 82.

The spelling of 398887887952 in words is "three hundred ninety-eight billion, eight hundred eighty-seven million, eight hundred eighty-seven thousand, nine hundred fifty-two".