22404953 has 4 divisors (see below), whose sum is σ = 22688640. Its totient is φ = 22121268.

The previous prime is 22404919. The next prime is 22404979. The reversal of 22404953 is 35940422.

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 22404953 - 2²² = 18210649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22404913) 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, 141725 + ... + 141882.

It is an arithmetic number, because the mean of its divisors is an integer number (5672160).

Almost surely, 2^22404953 is an apocalyptic number.

It is an amenable number.

22404953 is a deficient number, since it is larger than the sum of its proper divisors (283687).

22404953 is an equidigital number, since it uses as much as digits as its factorization.

22404953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283686.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22404953 is about 4733.3870536858. The cubic root of 22404953 is about 281.9127246982.

The spelling of 22404953 in words is "twenty-two million, four hundred four thousand, nine hundred fifty-three".