22355979 has 4 divisors (see below), whose sum is σ = 29807976. Its totient is φ = 14903984.

The previous prime is 22355941. The next prime is 22355987. The reversal of 22355979 is 97955322.

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 22355979 - 2¹¹ = 22353931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22355979.

It is not an unprimeable number, because it can be changed into a prime (22355909) 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, 3725994 + ... + 3725999.

It is an arithmetic number, because the mean of its divisors is an integer number (7451994).

Almost surely, 2^22355979 is an apocalyptic number.

22355979 is a deficient number, since it is larger than the sum of its proper divisors (7451997).

22355979 is an equidigital number, since it uses as much as digits as its factorization.

22355979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451996.

The product of its digits is 170100, while the sum is 42.

The square root of 22355979 is about 4728.2109724504. The cubic root of 22355979 is about 281.7071679833.

The spelling of 22355979 in words is "twenty-two million, three hundred fifty-five thousand, nine hundred seventy-nine".