398882804895 has 12 divisors (see below), whose sum is σ = 691396861896. Its totient is φ = 212737495920.

The previous prime is 398882804861. The next prime is 398882804909. The reversal of 398882804895 is 598408288893.

It is a happy number.

398882804895 is a `hidden beast` number, since 398 + 8 + 82 + 80 + 4 + 89 + 5 = 666.

It is not a de Polignac number, because 398882804895 - 2¹⁰ = 398882803871 is a prime.

It is a super-2 number, since 2×398882804895² (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 11 ways as a sum of consecutive naturals, for example, 4432031121 + ... + 4432031210.

It is an arithmetic number, because the mean of its divisors is an integer number (57616405158).

Almost surely, 2^398882804895 is an apocalyptic number.

398882804895 is a deficient number, since it is larger than the sum of its proper divisors (292514057001).

398882804895 is a wasteful number, since it uses less digits than its factorization.

398882804895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8864062342 (or 8864062339 counting only the distinct ones).

The product of its (nonzero) digits is 318504960, while the sum is 72.

The spelling of 398882804895 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, eight hundred four thousand, eight hundred ninety-five".