992591 has 2 divisors, whose sum is σ = 992592. Its totient is φ = 992590.

The previous prime is 992561. The next prime is 992603. The reversal of 992591 is 195299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992591 - 2¹⁰ = 991567 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (992521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496295 + 496296.

It is an arithmetic number, because the mean of its divisors is an integer number (496296).

2⁹⁹²⁵⁹¹ is an apocalyptic number.

992591 is a deficient number, since it is larger than the sum of its proper divisors (1).

992591 is an equidigital number, since it uses as much as digits as its factorization.

992591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 35.

The square root of 992591 is about 996.2886128025. The cubic root of 992591 is about 99.7524208850.

The spelling of 992591 in words is "nine hundred ninety-two thousand, five hundred ninety-one".