22943839 has 4 divisors (see below), whose sum is σ = 23017456. Its totient is φ = 22870224.

The previous prime is 22943831. The next prime is 22943873. The reversal of 22943839 is 93834922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93834922 = 2 ⋅46917461.

It is a cyclic number.

It is not a de Polignac number, because 22943839 - 2³ = 22943831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22943831) 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, 36339 + ... + 36964.

It is an arithmetic number, because the mean of its divisors is an integer number (5754364).

Almost surely, 2^22943839 is an apocalyptic number.

22943839 is a deficient number, since it is larger than the sum of its proper divisors (73617).

22943839 is an equidigital number, since it uses as much as digits as its factorization.

22943839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73616.

The product of its digits is 93312, while the sum is 40.

The square root of 22943839 is about 4789.9727556636. The cubic root of 22943839 is about 284.1550391648.

The spelling of 22943839 in words is "twenty-two million, nine hundred forty-three thousand, eight hundred thirty-nine".