23495989 has 24 divisors (see below), whose sum is σ = 28735200. Its totient is φ = 18996480.

The previous prime is 23495987. The next prime is 23496007. The reversal of 23495989 is 98959432.

It is not a de Polignac number, because 23495989 - 2¹ = 23495987 is a prime.

It is a super-2 number, since 2×23495989² = 1104122998176242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23495981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60207 + ... + 60595.

It is an arithmetic number, because the mean of its divisors is an integer number (1197300).

Almost surely, 2^23495989 is an apocalyptic number.

It is an amenable number.

23495989 is a deficient number, since it is larger than the sum of its proper divisors (5239211).

23495989 is a wasteful number, since it uses less digits than its factorization.

23495989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 436 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The square root of 23495989 is about 4847.2661367002. The cubic root of 23495989 is about 286.4164186786.

It can be divided in two parts, 2349 and 5989, that added together give a palindrome (8338).

The spelling of 23495989 in words is "twenty-three million, four hundred ninety-five thousand, nine hundred eighty-nine".