22397579 has 2 divisors, whose sum is σ = 22397580. Its totient is φ = 22397578.

The previous prime is 22397567. The next prime is 22397581. The reversal of 22397579 is 97579322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22397579 - 2⁴ = 22397563 is a prime.

It is a super-2 number, since 2×22397579² = 1003303090122482, which contains 22 as substring.

Together with 22397581, 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 (22397509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11198789 + 11198790.

It is an arithmetic number, because the mean of its divisors is an integer number (11198790).

Almost surely, 2^22397579 is an apocalyptic number.

22397579 is a deficient number, since it is larger than the sum of its proper divisors (1).

22397579 is an equidigital number, since it uses as much as digits as its factorization.

22397579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 22397579 is about 4732.6080547622. The cubic root of 22397579 is about 281.8817932558.

The spelling of 22397579 in words is "twenty-two million, three hundred ninety-seven thousand, five hundred seventy-nine".