398877581475 has 72 divisors (see below), whose sum is σ = 750807563792. Its totient is φ = 202171334400.

The previous prime is 398877581429. The next prime is 398877581497. The reversal of 398877581475 is 574185778893.

It is a happy number.

398877581475 is a `hidden beast` number, since 3 + 9 + 8 + 8 + 7 + 75 + 81 + 475 = 666.

It is not a de Polignac number, because 398877581475 - 2¹² = 398877577379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 199156 + ... + 915105.

Almost surely, 2^398877581475 is an apocalyptic number.

398877581475 is a deficient number, since it is larger than the sum of its proper divisors (351929982317).

398877581475 is a wasteful number, since it uses less digits than its factorization.

398877581475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114357 (or 1114349 counting only the distinct ones).

The product of its digits is 474163200, while the sum is 72.

The spelling of 398877581475 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, five hundred eighty-one thousand, four hundred seventy-five".