23699879 has 6 divisors (see below), whose sum is σ = 27569304. Its totient is φ = 20314140.

The previous prime is 23699857. The next prime is 23699881. The reversal of 23699879 is 97899632.

It is a de Polignac number, because none of the positive numbers 2^k-23699879 is a prime.

It is a super-2 number, since 2×23699879² = 1123368529229282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23699879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23699839) 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 in 5 ways as a sum of consecutive naturals, for example, 241787 + ... + 241884.

It is an arithmetic number, because the mean of its divisors is an integer number (4594884).

Almost surely, 2^23699879 is an apocalyptic number.

23699879 is a deficient number, since it is larger than the sum of its proper divisors (3869425).

23699879 is an equidigital number, since it uses as much as digits as its factorization.

23699879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483685 (or 483678 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 23699879 is about 4868.2521504129. The cubic root of 23699879 is about 287.2425077005.

The spelling of 23699879 in words is "twenty-three million, six hundred ninety-nine thousand, eight hundred seventy-nine".