749585917 has 2 divisors, whose sum is σ = 749585918. Its totient is φ = 749585916.

The previous prime is 749585861. The next prime is 749585951. The reversal of 749585917 is 719585947.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644195161 + 105390756 = 25381^2 + 10266^2 .

It is an emirp because it is prime and its reverse (719585947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749585917 - 2⁷ = 749585789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749585957) 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, 374792958 + 374792959.

It is an arithmetic number, because the mean of its divisors is an integer number (374792959).

Almost surely, 2^749585917 is an apocalyptic number.

It is an amenable number.

749585917 is a deficient number, since it is larger than the sum of its proper divisors (1).

749585917 is an equidigital number, since it uses as much as digits as its factorization.

749585917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 55.

The square root of 749585917 is about 27378.5667448097. The cubic root of 749585917 is about 908.3930570238.

The spelling of 749585917 in words is "seven hundred forty-nine million, five hundred eighty-five thousand, nine hundred seventeen".