23279389 has 16 divisors (see below), whose sum is σ = 28298880. Its totient is φ = 18705600.

The previous prime is 23279387. The next prime is 23279393. The reversal of 23279389 is 98397232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23279389 - 2¹ = 23279387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23279387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12567 + ... + 14299.

It is an arithmetic number, because the mean of its divisors is an integer number (1768680).

Almost surely, 2^23279389 is an apocalyptic number.

It is an amenable number.

23279389 is a deficient number, since it is larger than the sum of its proper divisors (5019491).

23279389 is a wasteful number, since it uses less digits than its factorization.

23279389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860.

The product of its digits is 163296, while the sum is 43.

The square root of 23279389 is about 4824.8719153984. The cubic root of 23279389 is about 285.5335812943.

The spelling of 23279389 in words is "twenty-three million, two hundred seventy-nine thousand, three hundred eighty-nine".