999371392679 has 16 divisors (see below), whose sum is σ = 1109616589440. Its totient is φ = 892383819360.

The previous prime is 999371392673. The next prime is 999371392681. The reversal of 999371392679 is 976293173999.

It is not a de Polignac number, because 999371392679 - 2³² = 995076425383 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 (999371392673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152504 + ... + 1421970.

It is an arithmetic number, because the mean of its divisors is an integer number (69351036840).

Almost surely, 2^999371392679 is an apocalyptic number.

999371392679 is a deficient number, since it is larger than the sum of its proper divisors (110245196761).

999371392679 is a wasteful number, since it uses less digits than its factorization.

999371392679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270750.

The product of its digits is 312487308, while the sum is 74.

The spelling of 999371392679 in words is "nine hundred ninety-nine billion, three hundred seventy-one million, three hundred ninety-two thousand, six hundred seventy-nine".