22397937 has 4 divisors (see below), whose sum is σ = 29863920. Its totient is φ = 14931956.

The previous prime is 22397927. The next prime is 22397951. The reversal of 22397937 is 73979322.

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 22397937 - 2²⁴ = 5620721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22397927) 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, 3732987 + ... + 3732992.

It is an arithmetic number, because the mean of its divisors is an integer number (7465980).

Almost surely, 2^22397937 is an apocalyptic number.

It is an amenable number.

22397937 is a deficient number, since it is larger than the sum of its proper divisors (7465983).

22397937 is an equidigital number, since it uses as much as digits as its factorization.

22397937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7465982.

The product of its digits is 142884, while the sum is 42.

The square root of 22397937 is about 4732.6458773080. The cubic root of 22397937 is about 281.8832951019.

The spelling of 22397937 in words is "twenty-two million, three hundred ninety-seven thousand, nine hundred thirty-seven".