922891 has 4 divisors (see below), whose sum is σ = 947872. Its totient is φ = 897912.

The previous prime is 922861. The next prime is 922897. The reversal of 922891 is 198229.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198229 = 167 ⋅1187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-922891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (922897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12435 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (236968).

2⁹²²⁸⁹¹ is an apocalyptic number.

922891 is a deficient number, since it is larger than the sum of its proper divisors (24981).

922891 is a wasteful number, since it uses less digits than its factorization.

922891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24980.

The product of its digits is 2592, while the sum is 31.

The square root of 922891 is about 960.6721605210. The cubic root of 922891 is about 97.3606512529.

The spelling of 922891 in words is "nine hundred twenty-two thousand, eight hundred ninety-one".