22404939 has 4 divisors (see below), whose sum is σ = 29873256. Its totient is φ = 14936624.

The previous prime is 22404919. The next prime is 22404979. The reversal of 22404939 is 93940422.

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

It is a cyclic number.

It is not a de Polignac number, because 22404939 - 2⁹ = 22404427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22404919) 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, 3734154 + ... + 3734159.

It is an arithmetic number, because the mean of its divisors is an integer number (7468314).

Almost surely, 2^22404939 is an apocalyptic number.

22404939 is a deficient number, since it is larger than the sum of its proper divisors (7468317).

22404939 is an equidigital number, since it uses as much as digits as its factorization.

22404939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7468316.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 22404939 is about 4733.3855748291. The cubic root of 22404939 is about 281.9126659794.

The spelling of 22404939 in words is "twenty-two million, four hundred four thousand, nine hundred thirty-nine".