399085137306 has 24 divisors (see below), whose sum is σ = 866681442900. Its totient is φ = 132721151616.

The previous prime is 399085137281. The next prime is 399085137331. The reversal of 399085137306 is 603731580993.

399085137306 is a `hidden beast` number, since 3 + 9 + 90 + 8 + 513 + 7 + 30 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (399085137281) and next prime (399085137331).

It can be written as a sum of positive squares in 2 ways, for example, as 336447561681 + 62637575625 = 580041^2 + 250275^2 .

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, 25594281 + ... + 25609868.

Almost surely, 2^399085137306 is an apocalyptic number.

399085137306 is an abundant number, since it is smaller than the sum of its proper divisors (467596305594).

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

399085137306 is a wasteful number, since it uses less digits than its factorization.

399085137306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51204590 (or 51204587 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 399085137306 in words is "three hundred ninety-nine billion, eighty-five million, one hundred thirty-seven thousand, three hundred six".