399406572288 has 108 divisors (see below), whose sum is σ = 1182711854688. Its totient is φ = 129537239040.

The previous prime is 399406572281. The next prime is 399406572293. The reversal of 399406572288 is 882275604993.

399406572288 is a `hidden beast` number, since 39 + 9 + 4 + 0 + 6 + 572 + 28 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (399406572281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2257368 + ... + 2427863.

Almost surely, 2^399406572288 is an apocalyptic number.

It is an amenable number.

399406572288 is an abundant number, since it is smaller than the sum of its proper divisors (783305282400).

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

399406572288 is a wasteful number, since it uses less digits than its factorization.

399406572288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685290 (or 4685273 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 399406572288 in words is "three hundred ninety-nine billion, four hundred six million, five hundred seventy-two thousand, two hundred eighty-eight".