23776989 has 4 divisors (see below), whose sum is σ = 31702656. Its totient is φ = 15851324.

The previous prime is 23776967. The next prime is 23777053. The reversal of 23776989 is 98967732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23776989 - 2⁷ = 23776861 is a prime.

It is a super-2 number, since 2×23776989² = 1130690411812242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23776919) 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, 3962829 + ... + 3962834.

It is an arithmetic number, because the mean of its divisors is an integer number (7925664).

Almost surely, 2^23776989 is an apocalyptic number.

It is an amenable number.

23776989 is a deficient number, since it is larger than the sum of its proper divisors (7925667).

23776989 is an equidigital number, since it uses as much as digits as its factorization.

23776989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7925666.

The product of its digits is 1143072, while the sum is 51.

The square root of 23776989 is about 4876.1653991636. The cubic root of 23776989 is about 287.5536948230.

The spelling of 23776989 in words is "twenty-three million, seven hundred seventy-six thousand, nine hundred eighty-nine".