22390979 has 6 divisors (see below), whose sum is σ = 24246036. Its totient is φ = 20668440.

The previous prime is 22390969. The next prime is 22390981. The reversal of 22390979 is 97909322.

It is not a de Polignac number, because 22390979 - 2⁸ = 22390723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22390919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66077 + ... + 66414.

It is an arithmetic number, because the mean of its divisors is an integer number (4041006).

Almost surely, 2^22390979 is an apocalyptic number.

22390979 is a deficient number, since it is larger than the sum of its proper divisors (1855057).

22390979 is a wasteful number, since it uses less digits than its factorization.

22390979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132517 (or 132504 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 22390979 is about 4731.9107134434. The cubic root of 22390979 is about 281.8541027243.

The spelling of 22390979 in words is "twenty-two million, three hundred ninety thousand, nine hundred seventy-nine".