23355439 has 2 divisors, whose sum is σ = 23355440. Its totient is φ = 23355438.

The previous prime is 23355413. The next prime is 23355487. The reversal of 23355439 is 93455332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23355439 - 2¹⁷ = 23224367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23355499) 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, 11677719 + 11677720.

It is an arithmetic number, because the mean of its divisors is an integer number (11677720).

Almost surely, 2^23355439 is an apocalyptic number.

23355439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23355439 is an equidigital number, since it uses as much as digits as its factorization.

23355439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 34.

The square root of 23355439 is about 4832.7465275969. The cubic root of 23355439 is about 285.8441740022.

The spelling of 23355439 in words is "twenty-three million, three hundred fifty-five thousand, four hundred thirty-nine".