22939931 has 4 divisors (see below), whose sum is σ = 26217072. Its totient is φ = 19662792.

The previous prime is 22939913. The next prime is 22939933. The reversal of 22939931 is 13993922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13993922 = 2 ⋅6996961.

It is a cyclic number.

It is not a de Polignac number, because 22939931 - 2⁶ = 22939867 is a prime.

It is a super-2 number, since 2×22939931² = 1052480868569522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22939933) 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, 1638560 + ... + 1638573.

It is an arithmetic number, because the mean of its divisors is an integer number (6554268).

Almost surely, 2^22939931 is an apocalyptic number.

22939931 is a deficient number, since it is larger than the sum of its proper divisors (3277141).

22939931 is an equidigital number, since it uses as much as digits as its factorization.

22939931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277140.

The product of its digits is 26244, while the sum is 38.

The square root of 22939931 is about 4789.5648027770. The cubic root of 22939931 is about 284.1389049723.

The spelling of 22939931 in words is "twenty-two million, nine hundred thirty-nine thousand, nine hundred thirty-one".