23479889 has 2 divisors, whose sum is σ = 23479890. Its totient is φ = 23479888.

The previous prime is 23479871. The next prime is 23479933. The reversal of 23479889 is 98897432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 54289 = 4840^2 + 233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23479889 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23479829) 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 as a sum of consecutive naturals, namely, 11739944 + 11739945.

It is an arithmetic number, because the mean of its divisors is an integer number (11739945).

Almost surely, 2^23479889 is an apocalyptic number.

It is an amenable number.

23479889 is a deficient number, since it is larger than the sum of its proper divisors (1).

23479889 is an equidigital number, since it uses as much as digits as its factorization.

23479889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 23479889 is about 4845.6051221700. The cubic root of 23479889 is about 286.3509839925.

The spelling of 23479889 in words is "twenty-three million, four hundred seventy-nine thousand, eight hundred eighty-nine".