399349371339768 has 32 divisors (see below), whose sum is σ = 1004144373032400. Its totient is φ = 132346997822208.

The previous prime is 399349371339713. The next prime is 399349371339797. The reversal of 399349371339768 is 867933173943993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48091201453 + ... + 48091209756.

Almost surely, 2^{399349371339768} is an apocalyptic number.

It is an amenable number.

399349371339768 is an abundant number, since it is smaller than the sum of its proper divisors (604795001692632).

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

399349371339768 is a wasteful number, since it uses less digits than its factorization.

399349371339768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96182411391 (or 96182411387 counting only the distinct ones).

The product of its digits is 14999390784, while the sum is 84.

The spelling of 399349371339768 in words is "three hundred ninety-nine trillion, three hundred forty-nine billion, three hundred seventy-one million, three hundred thirty-nine thousand, seven hundred sixty-eight".