992720451 has 4 divisors (see below), whose sum is σ = 1323627272. Its totient is φ = 661813632.

The previous prime is 992720429. The next prime is 992720459. The reversal of 992720451 is 154027299.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 992720451 - 2⁶ = 992720387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (992720459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165453406 + ... + 165453411.

It is an arithmetic number, because the mean of its divisors is an integer number (330906818).

Almost surely, 2^992720451 is an apocalyptic number.

992720451 is a deficient number, since it is larger than the sum of its proper divisors (330906821).

992720451 is a wasteful number, since it uses less digits than its factorization.

992720451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330906820.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 992720451 is about 31507.4665912701. The cubic root of 992720451 is about 997.5675717568.

The spelling of 992720451 in words is "nine hundred ninety-two million, seven hundred twenty thousand, four hundred fifty-one".