78908759 has 2 divisors, whose sum is σ = 78908760. Its totient is φ = 78908758.

The previous prime is 78908737. The next prime is 78908777. The reversal of 78908759 is 95780987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78908759 - 2⁸ = 78908503 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78908759.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78908719) 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, 39454379 + 39454380.

It is an arithmetic number, because the mean of its divisors is an integer number (39454380).

Almost surely, 2^78908759 is an apocalyptic number.

78908759 is a deficient number, since it is larger than the sum of its proper divisors (1).

78908759 is an equidigital number, since it uses as much as digits as its factorization.

78908759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 78908759 is about 8883.0602271965. The cubic root of 78908759 is about 428.9187889519.

The spelling of 78908759 in words is "seventy-eight million, nine hundred eight thousand, seven hundred fifty-nine".