22979447 has 2 divisors, whose sum is σ = 22979448. Its totient is φ = 22979446.

The previous prime is 22979431. The next prime is 22979471. The reversal of 22979447 is 74497922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22979447 - 2⁴ = 22979431 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22979398 and 22979407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22979347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11489723 + 11489724.

It is an arithmetic number, because the mean of its divisors is an integer number (11489724).

Almost surely, 2^22979447 is an apocalyptic number.

22979447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22979447 is an equidigital number, since it uses as much as digits as its factorization.

22979447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 22979447 is about 4793.6882460168. The cubic root of 22979447 is about 284.3019625980.

The spelling of 22979447 in words is "twenty-two million, nine hundred seventy-nine thousand, four hundred forty-seven".