399713892578 has 48 divisors (see below), whose sum is σ = 809441418816. Its totient is φ = 143753238720.

The previous prime is 399713892577. The next prime is 399713892587. The reversal of 399713892578 is 875298317993.

It is not an unprimeable number, because it can be changed into a prime (399713892577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7653101 + ... + 7705152.

It is an arithmetic number, because the mean of its divisors is an integer number (16863362892).

Almost surely, 2^399713892578 is an apocalyptic number.

399713892578 is an abundant number, since it is smaller than the sum of its proper divisors (409727526238).

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

399713892578 is a wasteful number, since it uses less digits than its factorization.

399713892578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15358299 (or 15358286 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 71.

The spelling of 399713892578 in words is "three hundred ninety-nine billion, seven hundred thirteen million, eight hundred ninety-two thousand, five hundred seventy-eight".