913668779 has 2 divisors, whose sum is σ = 913668780. Its totient is φ = 913668778.

The previous prime is 913668761. The next prime is 913668793. The reversal of 913668779 is 977866319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 913668779 - 2²⁴ = 896891563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (913668719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456834389 + 456834390.

It is an arithmetic number, because the mean of its divisors is an integer number (456834390).

Almost surely, 2^913668779 is an apocalyptic number.

913668779 is a deficient number, since it is larger than the sum of its proper divisors (1).

913668779 is an equidigital number, since it uses as much as digits as its factorization.

913668779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 913668779 is about 30226.9545108335. The cubic root of 913668779 is about 970.3526471352.

The spelling of 913668779 in words is "nine hundred thirteen million, six hundred sixty-eight thousand, seven hundred seventy-nine".