399709750813 has 8 divisors (see below), whose sum is σ = 401154858720. Its totient is φ = 398265572880.

The previous prime is 399709750793. The next prime is 399709750829. The reversal of 399709750813 is 318057907993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399709750813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399709753813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634503 + ... + 1096363.

It is an arithmetic number, because the mean of its divisors is an integer number (50144357340).

Almost surely, 2^399709750813 is an apocalyptic number.

It is an amenable number.

399709750813 is a deficient number, since it is larger than the sum of its proper divisors (1445107907).

399709750813 is a wasteful number, since it uses less digits than its factorization.

399709750813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464987.

The product of its (nonzero) digits is 12859560, while the sum is 61.

The spelling of 399709750813 in words is "three hundred ninety-nine billion, seven hundred nine million, seven hundred fifty thousand, eight hundred thirteen".