399602186696 has 16 divisors (see below), whose sum is σ = 749261837340. Its totient is φ = 199799030080.

The previous prime is 399602186653. The next prime is 399602186699. The reversal of 399602186696 is 696681206993.

It can be written as a sum of positive squares in 2 ways, for example, as 399411360100 + 190826596 = 631990^2 + 13814^2 .

It is a super-2 number, since 2×399602186696² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (399602186699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840266 + ... + 1226886.

Almost surely, 2^399602186696 is an apocalyptic number.

It is an amenable number.

399602186696 is a deficient number, since it is larger than the sum of its proper divisors (349659650644).

399602186696 is a wasteful number, since it uses less digits than its factorization.

399602186696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515824 (or 515820 counting only the distinct ones).

The product of its (nonzero) digits is 45349632, while the sum is 65.

The spelling of 399602186696 in words is "three hundred ninety-nine billion, six hundred two million, one hundred eighty-six thousand, six hundred ninety-six".