922921 has 4 divisors (see below), whose sum is σ = 963072. Its totient is φ = 882772.

The previous prime is 922907. The next prime is 922931. The reversal of 922921 is 129229.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 922921 - 2¹⁷ = 791849 is a prime.

It is an Ulam number.

It is a Duffinian number.

922921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (922931) 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, 20041 + ... + 20086.

It is an arithmetic number, because the mean of its divisors is an integer number (240768).

2⁹²²⁹²¹ is an apocalyptic number.

It is an amenable number.

922921 is a deficient number, since it is larger than the sum of its proper divisors (40151).

922921 is a wasteful number, since it uses less digits than its factorization.

922921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40150.

The product of its digits is 648, while the sum is 25.

The square root of 922921 is about 960.6877744616. The cubic root of 922921 is about 97.3617061944.

The spelling of 922921 in words is "nine hundred twenty-two thousand, nine hundred twenty-one".