22029979 has 2 divisors, whose sum is σ = 22029980. Its totient is φ = 22029978.

The previous prime is 22029923. The next prime is 22029983. The reversal of 22029979 is 97992022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22029979 - 2¹¹ = 22027931 is a prime.

It is not a weakly prime, because it can be changed into another prime (22029779) 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 as a sum of consecutive naturals, namely, 11014989 + 11014990.

It is an arithmetic number, because the mean of its divisors is an integer number (11014990).

Almost surely, 2^22029979 is an apocalyptic number.

22029979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22029979 is an equidigital number, since it uses as much as digits as its factorization.

22029979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 22029979 is about 4693.6104439972. The cubic root of 22029979 is about 280.3311515652.

The spelling of 22029979 in words is "twenty-two million, twenty-nine thousand, nine hundred seventy-nine".