992931121 has 16 divisors (see below), whose sum is σ = 1293957504. Its totient is φ = 739401984.

The previous prime is 992931073. The next prime is 992931143. The reversal of 992931121 is 121139299.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 992931121 - 2¹³ = 992922929 is a prime.

It is a super-2 number, since 2×992931121² = 1971824422100633282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (992931161) 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, 319375 + ... + 322468.

It is an arithmetic number, because the mean of its divisors is an integer number (80872344).

Almost surely, 2^992931121 is an apocalyptic number.

992931121 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

992931121 is a deficient number, since it is larger than the sum of its proper divisors (301026383).

992931121 is a wasteful number, since it uses less digits than its factorization.

992931121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641880.

The product of its digits is 8748, while the sum is 37.

The square root of 992931121 is about 31510.8095897265. The cubic root of 992931121 is about 997.6381329760.

The spelling of 992931121 in words is "nine hundred ninety-two million, nine hundred thirty-one thousand, one hundred twenty-one".