23456965439 has 2 divisors, whose sum is σ = 23456965440. Its totient is φ = 23456965438.

The previous prime is 23456965391. The next prime is 23456965447. The reversal of 23456965439 is 93456965432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23456965439 - 2¹⁶ = 23456899903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23456965339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11728482719 + 11728482720.

It is an arithmetic number, because the mean of its divisors is an integer number (11728482720).

Almost surely, 2^23456965439 is an apocalyptic number.

23456965439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23456965439 is an equidigital number, since it uses as much as digits as its factorization.

23456965439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20995200, while the sum is 56.

The spelling of 23456965439 in words is "twenty-three billion, four hundred fifty-six million, nine hundred sixty-five thousand, four hundred thirty-nine".