23916439 has 2 divisors, whose sum is σ = 23916440. Its totient is φ = 23916438.

The previous prime is 23916419. The next prime is 23916461. The reversal of 23916439 is 93461932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23916439 - 2⁷ = 23916311 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23916398 and 23916407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23916419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11958219 + 11958220.

It is an arithmetic number, because the mean of its divisors is an integer number (11958220).

Almost surely, 2^23916439 is an apocalyptic number.

23916439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23916439 is an equidigital number, since it uses as much as digits as its factorization.

23916439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 23916439 is about 4890.4436404073. The cubic root of 23916439 is about 288.1147586323.

It can be divided in two parts, 2 and 3916439, that added together give a square (3916441 = 1979²).

The spelling of 23916439 in words is "twenty-three million, nine hundred sixteen thousand, four hundred thirty-nine".