399882958651 has 4 divisors (see below), whose sum is σ = 436235954904. Its totient is φ = 363529962400.

The previous prime is 399882958621. The next prime is 399882958661. The reversal of 399882958651 is 156859288993.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 399882958651 - 2²⁵ = 399849404219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399882958621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18176498110 + ... + 18176498131.

It is an arithmetic number, because the mean of its divisors is an integer number (109058988726).

Almost surely, 2^399882958651 is an apocalyptic number.

399882958651 is a deficient number, since it is larger than the sum of its proper divisors (36352996253).

399882958651 is a wasteful number, since it uses less digits than its factorization.

399882958651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36352996252.

The product of its digits is 335923200, while the sum is 73.

The spelling of 399882958651 in words is "three hundred ninety-nine billion, eight hundred eighty-two million, nine hundred fifty-eight thousand, six hundred fifty-one".