999164931 has 8 divisors (see below), whose sum is σ = 1332537024. Its totient is φ = 665951400.

The previous prime is 999164911. The next prime is 999164977. The reversal of 999164931 is 139461999.

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

It is not a de Polignac number, because 999164931 - 2¹⁴ = 999148547 is a prime.

It is a super-2 number, since 2×999164931² = 1996661118680469522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999164911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24061 + ... + 50766.

It is an arithmetic number, because the mean of its divisors is an integer number (166567128).

Almost surely, 2^999164931 is an apocalyptic number.

999164931 is a deficient number, since it is larger than the sum of its proper divisors (333372093).

999164931 is a wasteful number, since it uses less digits than its factorization.

999164931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79281.

The product of its digits is 472392, while the sum is 51.

The square root of 999164931 is about 31609.5702438360. The cubic root of 999164931 is about 999.7215661485.

The spelling of 999164931 in words is "nine hundred ninety-nine million, one hundred sixty-four thousand, nine hundred thirty-one".