23899971 has 8 divisors (see below), whose sum is σ = 32225040. Its totient is φ = 15754112.

The previous prime is 23899963. The next prime is 23899991. The reversal of 23899971 is 17999832.

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 23899971 - 2³ = 23899963 is a prime.

It is a super-2 number, since 2×23899971² = 1142417227601682, 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 23899971.

It is not an unprimeable number, because it can be changed into a prime (23899951) 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, 44490 + ... + 45023.

It is an arithmetic number, because the mean of its divisors is an integer number (4028130).

Almost surely, 2^23899971 is an apocalyptic number.

23899971 is a deficient number, since it is larger than the sum of its proper divisors (8325069).

23899971 is an equidigital number, since it uses as much as digits as its factorization.

23899971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89605.

The product of its digits is 244944, while the sum is 48.

The square root of 23899971 is about 4888.7596586455. The cubic root of 23899971 is about 288.0486149607.

The spelling of 23899971 in words is "twenty-three million, eight hundred ninety-nine thousand, nine hundred seventy-one".