398452880 has 40 divisors (see below), whose sum is σ = 1058747712. Its totient is φ = 136612224.

The previous prime is 398452877. The next prime is 398452891. The reversal of 398452880 is 88254893.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355202 + ... + 356321.

Almost surely, 2^398452880 is an apocalyptic number.

It is an amenable number.

398452880 is an abundant number, since it is smaller than the sum of its proper divisors (660294832).

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

398452880 is a wasteful number, since it uses less digits than its factorization.

398452880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711543 (or 711537 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 398452880 is about 19961.2845278053. The cubic root of 398452880 is about 735.8551325619.

The spelling of 398452880 in words is "three hundred ninety-eight million, four hundred fifty-two thousand, eight hundred eighty".