992891 has 2 divisors, whose sum is σ = 992892. Its totient is φ = 992890.

The previous prime is 992867. The next prime is 992903. The reversal of 992891 is 198299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992891 - 2¹⁰ = 991867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (992801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496445 + 496446.

It is an arithmetic number, because the mean of its divisors is an integer number (496446).

2⁹⁹²⁸⁹¹ is an apocalyptic number.

992891 is a deficient number, since it is larger than the sum of its proper divisors (1).

992891 is an equidigital number, since it uses as much as digits as its factorization.

992891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 38.

The square root of 992891 is about 996.4391602100. The cubic root of 992891 is about 99.7624695730.

The spelling of 992891 in words is "nine hundred ninety-two thousand, eight hundred ninety-one".