398877279255 has 96 divisors (see below), whose sum is σ = 882454669824. Its totient is φ = 168317398656.

The previous prime is 398877279233. The next prime is 398877279263. The reversal of 398877279255 is 552972778893.

398877279255 is a `hidden beast` number, since 39 + 8 + 8 + 77 + 279 + 255 = 666.

It is not a de Polignac number, because 398877279255 - 2⁷ = 398877279127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1693249 + ... + 1914378.

It is an arithmetic number, because the mean of its divisors is an integer number (9192236144).

Almost surely, 2^398877279255 is an apocalyptic number.

398877279255 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

398877279255 is an abundant number, since it is smaller than the sum of its proper divisors (483577390569).

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

398877279255 is a wasteful number, since it uses less digits than its factorization.

398877279255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607667 (or 3607655 counting only the distinct ones).

The product of its digits is 533433600, while the sum is 72.

The spelling of 398877279255 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, two hundred seventy-nine thousand, two hundred fifty-five".