22979993 has 2 divisors, whose sum is σ = 22979994. Its totient is φ = 22979992.

The previous prime is 22979963. The next prime is 22980011. The reversal of 22979993 is 39997922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12759184 + 10220809 = 3572^2 + 3197^2 .

It is a cyclic number.

It is not a de Polignac number, because 22979993 - 2¹⁶ = 22914457 is a prime.

It is not a weakly prime, because it can be changed into another prime (22979953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11489996 + 11489997.

It is an arithmetic number, because the mean of its divisors is an integer number (11489997).

Almost surely, 2^22979993 is an apocalyptic number.

It is an amenable number.

22979993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22979993 is an equidigital number, since it uses as much as digits as its factorization.

22979993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 50.

The square root of 22979993 is about 4793.7451955647. The cubic root of 22979993 is about 284.3042142861.

The spelling of 22979993 in words is "twenty-two million, nine hundred seventy-nine thousand, nine hundred ninety-three".