399417530056 has 16 divisors (see below), whose sum is σ = 748947196800. Its totient is φ = 199698277584.

The previous prime is 399417530053. The next prime is 399417530063. The reversal of 399417530056 is 650035714993.

It is a junction number, because it is equal to n+sod(n) for n = 399417529985 and 399417530012.

It is not an unprimeable number, because it can be changed into a prime (399417530053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147876 + ... + 1454803.

It is an arithmetic number, because the mean of its divisors is an integer number (46809199800).

Almost surely, 2^399417530056 is an apocalyptic number.

It is an amenable number.

399417530056 is a deficient number, since it is larger than the sum of its proper divisors (349529666744).

399417530056 is a wasteful number, since it uses less digits than its factorization.

399417530056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621868 (or 2621864 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 52.

The spelling of 399417530056 in words is "three hundred ninety-nine billion, four hundred seventeen million, five hundred thirty thousand, fifty-six".