22404779 has 2 divisors, whose sum is σ = 22404780. Its totient is φ = 22404778.

The previous prime is 22404773. The next prime is 22404787. The reversal of 22404779 is 97740422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22404779 - 2⁸ = 22404523 is a prime.

It is not a weakly prime, because it can be changed into another prime (22404773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202389 + 11202390.

It is an arithmetic number, because the mean of its divisors is an integer number (11202390).

Almost surely, 2^22404779 is an apocalyptic number.

22404779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22404779 is an equidigital number, since it uses as much as digits as its factorization.

22404779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22404779 is about 4733.3686735770. The cubic root of 22404779 is about 281.9119949051.

The spelling of 22404779 in words is "twenty-two million, four hundred four thousand, seven hundred seventy-nine".