992336737921 has 3 divisors (see below), whose sum is σ = 992337734083. Its totient is φ = 992335741760.

The previous prime is 992336737919. The next prime is 992336738023. The reversal of 992336737921 is 129737633299.

The square root of 992336737921 is 996161.

It is a perfect power (a square), and thus also a powerful number.

992336737921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 129737633299 = 234733 ⋅552703.

It can be written as a sum of positive squares in only one way, i.e., 121549152321 + 870787585600 = 348639^2 + 933160^2 .

It is not a de Polignac number, because 992336737921 - 2¹ = 992336737919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 992336737921.

It is not an unprimeable number, because it can be changed into a prime (992336737901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 498081 + ... + 1494241.

Almost surely, 2^992336737921 is an apocalyptic number.

992336737921 is the 996161-st square number.

992336737921 is the 498081-st centered octagonal number.

It is an amenable number.

992336737921 is a deficient number, since it is larger than the sum of its proper divisors (996162).

992336737921 is an frugal number, since it uses more digits than its factorization.

992336737921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992322 (or 996161 counting only the distinct ones).

The product of its digits is 23147208, while the sum is 61.

It can be divided in two parts, 9923 and 36737921, that added together give a square (36747844 = 6062²).

The spelling of 992336737921 in words is "nine hundred ninety-two billion, three hundred thirty-six million, seven hundred thirty-seven thousand, nine hundred twenty-one".