22153979 has 4 divisors (see below), whose sum is σ = 22236000. Its totient is φ = 22071960.

The previous prime is 22153973. The next prime is 22153993. The reversal of 22153979 is 97935122.

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 22153979 - 2⁸ = 22153723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22153973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40604 + ... + 41145.

It is an arithmetic number, because the mean of its divisors is an integer number (5559000).

Almost surely, 2^22153979 is an apocalyptic number.

22153979 is a deficient number, since it is larger than the sum of its proper divisors (82021).

22153979 is an equidigital number, since it uses as much as digits as its factorization.

22153979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82020.

The product of its digits is 34020, while the sum is 38.

The square root of 22153979 is about 4706.8013554855. The cubic root of 22153979 is about 280.8561338509.

It can be divided in two parts, 22153 and 979, that added together give a palindrome (23132).

The spelling of 22153979 in words is "twenty-two million, one hundred fifty-three thousand, nine hundred seventy-nine".