23071439 has 2 divisors, whose sum is σ = 23071440. Its totient is φ = 23071438.

The previous prime is 23071423. The next prime is 23071457. The reversal of 23071439 is 93417032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23071439 - 2⁴ = 23071423 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 (23071469) 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, 11535719 + 11535720.

It is an arithmetic number, because the mean of its divisors is an integer number (11535720).

Almost surely, 2^23071439 is an apocalyptic number.

23071439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23071439 is an equidigital number, since it uses as much as digits as its factorization.

23071439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 23071439 is about 4803.2737794134. The cubic root of 23071439 is about 284.6808328127.

The spelling of 23071439 in words is "twenty-three million, seventy-one thousand, four hundred thirty-nine".