23890979 has 8 divisors (see below), whose sum is σ = 27861600. Its totient is φ = 20477688.

The previous prime is 23890957. The next prime is 23891009. The reversal of 23890979 is 97909832.

It is not a de Polignac number, because 23890979 - 2¹² = 23886883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23890939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34484 + ... + 35169.

It is an arithmetic number, because the mean of its divisors is an integer number (3482700).

Almost surely, 2^23890979 is an apocalyptic number.

23890979 is a deficient number, since it is larger than the sum of its proper divisors (3970621).

23890979 is an frugal number, since it uses more digits than its factorization.

23890979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69674 (or 69660 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 23890979 is about 4887.8399114537. The cubic root of 23890979 is about 288.0124857949.

The spelling of 23890979 in words is "twenty-three million, eight hundred ninety thousand, nine hundred seventy-nine".