23279689 has 4 divisors (see below), whose sum is σ = 23674320. Its totient is φ = 22885060.

The previous prime is 23279671. The next prime is 23279699. The reversal of 23279689 is 98697232.

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 23279689 - 2¹³ = 23271497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23279609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197227 + ... + 197344.

It is an arithmetic number, because the mean of its divisors is an integer number (5918580).

Almost surely, 2^23279689 is an apocalyptic number.

It is an amenable number.

23279689 is a deficient number, since it is larger than the sum of its proper divisors (394631).

23279689 is an equidigital number, since it uses as much as digits as its factorization.

23279689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394630.

The product of its digits is 326592, while the sum is 46.

The square root of 23279689 is about 4824.9030042064. The cubic root of 23279689 is about 285.5348078401.

The spelling of 23279689 in words is "twenty-three million, two hundred seventy-nine thousand, six hundred eighty-nine".