23159779 has 2 divisors, whose sum is σ = 23159780. Its totient is φ = 23159778.

The previous prime is 23159771. The next prime is 23159783. The reversal of 23159779 is 97795132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23159779 - 2³ = 23159771 is a prime.

It is not a weakly prime, because it can be changed into another prime (23159771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11579889 + 11579890.

It is an arithmetic number, because the mean of its divisors is an integer number (11579890).

Almost surely, 2^23159779 is an apocalyptic number.

23159779 is a deficient number, since it is larger than the sum of its proper divisors (1).

23159779 is an equidigital number, since it uses as much as digits as its factorization.

23159779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 43.

The square root of 23159779 is about 4812.4608050352. The cubic root of 23159779 is about 285.0437154652.

The spelling of 23159779 in words is "twenty-three million, one hundred fifty-nine thousand, seven hundred seventy-nine".