22447679 has 2 divisors, whose sum is σ = 22447680. Its totient is φ = 22447678.

The previous prime is 22447661. The next prime is 22447681. The reversal of 22447679 is 97674422.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22447679 is a prime.

Together with 22447681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22447699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11223839 + 11223840.

It is an arithmetic number, because the mean of its divisors is an integer number (11223840).

Almost surely, 2^22447679 is an apocalyptic number.

22447679 is a deficient number, since it is larger than the sum of its proper divisors (1).

22447679 is an equidigital number, since it uses as much as digits as its factorization.

22447679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 22447679 is about 4737.8981626878. The cubic root of 22447679 is about 282.0918123998.

The spelling of 22447679 in words is "twenty-two million, four hundred forty-seven thousand, six hundred seventy-nine".