23988979 has 6 divisors (see below), whose sum is σ = 27905604. Its totient is φ = 20561940.

The previous prime is 23988967. The next prime is 23988997. The reversal of 23988979 is 97988932.

It is not a de Polignac number, because 23988979 - 2¹⁹ = 23464691 is a prime.

It is a super-2 number, since 2×23988979² = 1150942226924882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23988949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 244737 + ... + 244834.

It is an arithmetic number, because the mean of its divisors is an integer number (4650934).

Almost surely, 2^23988979 is an apocalyptic number.

23988979 is a deficient number, since it is larger than the sum of its proper divisors (3916625).

23988979 is an equidigital number, since it uses as much as digits as its factorization.

23988979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489585 (or 489578 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 55.

The square root of 23988979 is about 4897.8545303020. The cubic root of 23988979 is about 288.4057544332.

The spelling of 23988979 in words is "twenty-three million, nine hundred eighty-eight thousand, nine hundred seventy-nine".