23394439 has 2 divisors, whose sum is σ = 23394440. Its totient is φ = 23394438.

The previous prime is 23394433. The next prime is 23394461. The reversal of 23394439 is 93449332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23394439 - 2⁵ = 23394407 is a prime.

It is a super-2 number, since 2×23394439² = 1094599552249442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23394398 and 23394407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23394433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11697219 + 11697220.

It is an arithmetic number, because the mean of its divisors is an integer number (11697220).

Almost surely, 2^23394439 is an apocalyptic number.

23394439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23394439 is an equidigital number, since it uses as much as digits as its factorization.

23394439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The square root of 23394439 is about 4836.7798171924. The cubic root of 23394439 is about 286.0031908295.

The spelling of 23394439 in words is "twenty-three million, three hundred ninety-four thousand, four hundred thirty-nine".