992139 has 8 divisors (see below), whose sum is σ = 1353792. Its totient is φ = 645960.

The previous prime is 992129. The next prime is 992141. The reversal of 992139 is 931299.

992139 = 62² + 63² + ... + 147².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 992139 - 2⁷ = 992011 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 992139.

It is not an unprimeable number, because it can be changed into a prime (992129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3717 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (169224).

2⁹⁹²¹³⁹ is an apocalyptic number.

992139 is a deficient number, since it is larger than the sum of its proper divisors (361653).

992139 is a wasteful number, since it uses less digits than its factorization.

992139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737.

The product of its digits is 4374, while the sum is 33.

The square root of 992139 is about 996.0617450741. The cubic root of 992139 is about 99.7372770376.

The spelling of 992139 in words is "nine hundred ninety-two thousand, one hundred thirty-nine".