23389979 has 8 divisors (see below), whose sum is σ = 24760560. Its totient is φ = 22057056.

The previous prime is 23389963. The next prime is 23389987. The reversal of 23389979 is 97998332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23389979 - 2⁴ = 23389963 is a prime.

It is a super-2 number, since 2×23389979² = 1094182235240882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23389279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8132 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (3095070).

Almost surely, 2^23389979 is an apocalyptic number.

23389979 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

23389979 is a deficient number, since it is larger than the sum of its proper divisors (1370581).

23389979 is a wasteful number, since it uses less digits than its factorization.

23389979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18829.

The product of its digits is 734832, while the sum is 50.

The square root of 23389979 is about 4836.3187446652. The cubic root of 23389979 is about 285.9850147820.

The spelling of 23389979 in words is "twenty-three million, three hundred eighty-nine thousand, nine hundred seventy-nine".