23001439 has 2 divisors, whose sum is σ = 23001440. Its totient is φ = 23001438.

The previous prime is 23001413. The next prime is 23001467. The reversal of 23001439 is 93410032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23001439 - 2⁹ = 23000927 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 (23001409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11500719 + 11500720.

It is an arithmetic number, because the mean of its divisors is an integer number (11500720).

Almost surely, 2^23001439 is an apocalyptic number.

23001439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23001439 is an equidigital number, since it uses as much as digits as its factorization.

23001439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23001439 is about 4795.9815470871. The cubic root of 23001439 is about 284.3926287667.

The spelling of 23001439 in words is "twenty-three million, one thousand, four hundred thirty-nine".