992921137 has 6 divisors (see below), whose sum is σ = 1075175142. Its totient is φ = 916542432.

The previous prime is 992921131. The next prime is 992921147. The reversal of 992921137 is 731129299.

It can be written as a sum of positive squares in 3 ways, for example, as 56010256 + 936910881 = 7484^2 + 30609^2 .

It is not a de Polignac number, because 992921137 - 2³ = 992921129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 992921093 and 992921102.

It is not an unprimeable number, because it can be changed into a prime (992921131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2937468 + ... + 2937805.

It is an arithmetic number, because the mean of its divisors is an integer number (179195857).

Almost surely, 2^992921137 is an apocalyptic number.

It is an amenable number.

992921137 is a deficient number, since it is larger than the sum of its proper divisors (82254005).

992921137 is a wasteful number, since it uses less digits than its factorization.

992921137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5875299 (or 5875286 counting only the distinct ones).

The product of its digits is 61236, while the sum is 43.

The square root of 992921137 is about 31510.6511675021. The cubic root of 992921137 is about 997.6347891883.

The spelling of 992921137 in words is "nine hundred ninety-two million, nine hundred twenty-one thousand, one hundred thirty-seven".