22429979 has 16 divisors (see below), whose sum is σ = 26629344. Its totient is φ = 18624000.

The previous prime is 22429949. The next prime is 22429999. The reversal of 22429979 is 97992422.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22429979 - 2⁸ = 22429723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22429909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13667 + ... + 15219.

It is an arithmetic number, because the mean of its divisors is an integer number (1664334).

Almost surely, 2^22429979 is an apocalyptic number.

22429979 is a deficient number, since it is larger than the sum of its proper divisors (4199365).

22429979 is a wasteful number, since it uses less digits than its factorization.

22429979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678.

The product of its digits is 163296, while the sum is 44.

The square root of 22429979 is about 4736.0298774395. The cubic root of 22429979 is about 282.0176497512.

It can be divided in two parts, 2242 and 9979, that added together give a palindrome (12221).

The spelling of 22429979 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred seventy-nine".