22174979 has 2 divisors, whose sum is σ = 22174980. Its totient is φ = 22174978.

The previous prime is 22174963. The next prime is 22174981. The reversal of 22174979 is 97947122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22174979 - 2⁴ = 22174963 is a prime.

It is a Sophie Germain prime.

Together with 22174981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22174939) 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, 11087489 + 11087490.

It is an arithmetic number, because the mean of its divisors is an integer number (11087490).

Almost surely, 2^22174979 is an apocalyptic number.

22174979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22174979 is an equidigital number, since it uses as much as digits as its factorization.

22174979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 22174979 is about 4709.0316414312. The cubic root of 22174979 is about 280.9448480304.

The spelling of 22174979 in words is "twenty-two million, one hundred seventy-four thousand, nine hundred seventy-nine".