992099421 has 40 divisors (see below), whose sum is σ = 1589591520. Its totient is φ = 614716128.

The previous prime is 992099393. The next prime is 992099431. The reversal of 992099421 is 124990299.

It is not a de Polignac number, because 992099421 - 2⁹ = 992098909 is a prime.

It is a super-2 number, since 2×992099421² = 1968522522297070482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992099431) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75486 + ... + 87648.

It is an arithmetic number, because the mean of its divisors is an integer number (39739788).

Almost surely, 2^992099421 is an apocalyptic number.

It is an amenable number.

992099421 is a deficient number, since it is larger than the sum of its proper divisors (597492099).

992099421 is a wasteful number, since it uses less digits than its factorization.

992099421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12247 (or 12238 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 992099421 is about 31497.6097664569. The cubic root of 992099421 is about 997.3595076032.

The spelling of 992099421 in words is "nine hundred ninety-two million, ninety-nine thousand, four hundred twenty-one".