399199658775 has 96 divisors (see below), whose sum is σ = 687251727360. Its totient is φ = 204220154880.

The previous prime is 399199658731. The next prime is 399199658801. The reversal of 399199658775 is 577856991993.

It is not a de Polignac number, because 399199658775 - 2⁸ = 399199658519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399199658775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 278575459 + ... + 278576891.

It is an arithmetic number, because the mean of its divisors is an integer number (7158872160).

Almost surely, 2^399199658775 is an apocalyptic number.

399199658775 is a deficient number, since it is larger than the sum of its proper divisors (288052068585).

399199658775 is a wasteful number, since it uses less digits than its factorization.

399199658775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2220 counting only the distinct ones).

The product of its digits is 1157360400, while the sum is 78.

The spelling of 399199658775 in words is "three hundred ninety-nine billion, one hundred ninety-nine million, six hundred fifty-eight thousand, seven hundred seventy-five".