23289979 has 2 divisors, whose sum is σ = 23289980. Its totient is φ = 23289978.

The previous prime is 23289943. The next prime is 23289989. The reversal of 23289979 is 97998232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23289979 - 2⁹ = 23289467 is a prime.

It is not a weakly prime, because it can be changed into another prime (23289919) 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, 11644989 + 11644990.

It is an arithmetic number, because the mean of its divisors is an integer number (11644990).

Almost surely, 2^23289979 is an apocalyptic number.

23289979 is a deficient number, since it is larger than the sum of its proper divisors (1).

23289979 is an equidigital number, since it uses as much as digits as its factorization.

23289979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 23289979 is about 4825.9692290772. The cubic root of 23289979 is about 285.5768719812.

The spelling of 23289979 in words is "twenty-three million, two hundred eighty-nine thousand, nine hundred seventy-nine".