22712939 has 4 divisors (see below), whose sum is σ = 22813224. Its totient is φ = 22612656.

The previous prime is 22712929. The next prime is 22712941. The reversal of 22712939 is 93921722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22712939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22712899 and 22712908.

It is not an unprimeable number, because it can be changed into a prime (22712929) 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 in 3 ways as a sum of consecutive naturals, for example, 49802 + ... + 50255.

It is an arithmetic number, because the mean of its divisors is an integer number (5703306).

Almost surely, 2^22712939 is an apocalyptic number.

22712939 is a deficient number, since it is larger than the sum of its proper divisors (100285).

22712939 is a wasteful number, since it uses less digits than its factorization.

22712939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100284.

The product of its digits is 13608, while the sum is 35.

The square root of 22712939 is about 4765.8093751219. The cubic root of 22712939 is about 283.1986061501.

The spelling of 22712939 in words is "twenty-two million, seven hundred twelve thousand, nine hundred thirty-nine".