23623989 has 8 divisors (see below), whose sum is σ = 31521120. Its totient is φ = 15738096.

The previous prime is 23623981. The next prime is 23623993. The reversal of 23623989 is 98932632.

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

It is not a de Polignac number, because 23623989 - 2³ = 23623981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23623989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23623981) 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 7 ways as a sum of consecutive naturals, for example, 6667 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (3940140).

Almost surely, 2^23623989 is an apocalyptic number.

It is an amenable number.

23623989 is a deficient number, since it is larger than the sum of its proper divisors (7897131).

23623989 is a wasteful number, since it uses less digits than its factorization.

23623989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619.

The product of its digits is 139968, while the sum is 42.

The square root of 23623989 is about 4860.4515222354. The cubic root of 23623989 is about 286.9355842920.

It can be divided in two parts, 236239 and 89, that added together give a triangular number (236328 = T₆₈₇).

The spelling of 23623989 in words is "twenty-three million, six hundred twenty-three thousand, nine hundred eighty-nine".