22490939 has 2 divisors, whose sum is σ = 22490940. Its totient is φ = 22490938.

The previous prime is 22490917. The next prime is 22490953. The reversal of 22490939 is 93909422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22490939 - 2⁸ = 22490683 is a prime.

It is not a weakly prime, because it can be changed into another prime (22490969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11245469 + 11245470.

It is an arithmetic number, because the mean of its divisors is an integer number (11245470).

Almost surely, 2^22490939 is an apocalyptic number.

22490939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22490939 is an equidigital number, since it uses as much as digits as its factorization.

22490939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 22490939 is about 4742.4612808119. The cubic root of 22490939 is about 282.2729070096.

The spelling of 22490939 in words is "twenty-two million, four hundred ninety thousand, nine hundred thirty-nine".