23487039479 has 2 divisors, whose sum is σ = 23487039480. Its totient is φ = 23487039478.

The previous prime is 23487039431. The next prime is 23487039497. The reversal of 23487039479 is 97493078432.

Together with next prime (23487039497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23487039479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23487039179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11743519739 + 11743519740.

It is an arithmetic number, because the mean of its divisors is an integer number (11743519740).

Almost surely, 2^23487039479 is an apocalyptic number.

23487039479 is a deficient number, since it is larger than the sum of its proper divisors (1).

23487039479 is an equidigital number, since it uses as much as digits as its factorization.

23487039479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 23487039479 in words is "twenty-three billion, four hundred eighty-seven million, thirty-nine thousand, four hundred seventy-nine".