23992159 has 4 divisors (see below), whose sum is σ = 24131016. Its totient is φ = 23853304.

The previous prime is 23992147. The next prime is 23992183. The reversal of 23992159 is 95129932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23992159 - 2⁵ = 23992127 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23990159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69169 + ... + 69514.

It is an arithmetic number, because the mean of its divisors is an integer number (6032754).

Almost surely, 2^23992159 is an apocalyptic number.

23992159 is a deficient number, since it is larger than the sum of its proper divisors (138857).

23992159 is a wasteful number, since it uses less digits than its factorization.

23992159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138856.

The product of its digits is 43740, while the sum is 40.

The square root of 23992159 is about 4898.1791514807. The cubic root of 23992159 is about 288.4184976430.

The spelling of 23992159 in words is "twenty-three million, nine hundred ninety-two thousand, one hundred fifty-nine".