23139407 has 2 divisors, whose sum is σ = 23139408. Its totient is φ = 23139406.

The previous prime is 23139379. The next prime is 23139409. The reversal of 23139407 is 70493132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23139407 - 2¹⁶ = 23073871 is a prime.

Together with 23139409, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1456454 and since 23139407 and 1456454 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23139407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23139409) 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, 11569703 + 11569704.

It is an arithmetic number, because the mean of its divisors is an integer number (11569704).

Almost surely, 2^23139407 is an apocalyptic number.

23139407 is a deficient number, since it is larger than the sum of its proper divisors (1).

23139407 is an equidigital number, since it uses as much as digits as its factorization.

23139407 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 23139407 is about 4810.3437507105. The cubic root of 23139407 is about 284.9601134290.

The spelling of 23139407 in words is "twenty-three million, one hundred thirty-nine thousand, four hundred seven".