23479789 has 2 divisors, whose sum is σ = 23479790. Its totient is φ = 23479788.

The previous prime is 23479783. The next prime is 23479823. The reversal of 23479789 is 98797432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 9715689 = 3710^2 + 3117^2 .

It is a cyclic number.

It is not a de Polignac number, because 23479789 - 2⁹ = 23479277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23479783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11739894 + 11739895.

It is an arithmetic number, because the mean of its divisors is an integer number (11739895).

Almost surely, 2^23479789 is an apocalyptic number.

It is an amenable number.

23479789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23479789 is an equidigital number, since it uses as much as digits as its factorization.

23479789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 23479789 is about 4845.5948035303. The cubic root of 23479789 is about 286.3505774724.

The spelling of 23479789 in words is "twenty-three million, four hundred seventy-nine thousand, seven hundred eighty-nine".