748779917 has 2 divisors, whose sum is σ = 748779918. Its totient is φ = 748779916.

The previous prime is 748779883. The next prime is 748779929. The reversal of 748779917 is 719977847.

748779917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563302756 + 185477161 = 23734^2 + 13619^2 .

It is a cyclic number.

It is not a de Polignac number, because 748779917 - 2¹² = 748775821 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 (748779817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374389958 + 374389959.

It is an arithmetic number, because the mean of its divisors is an integer number (374389959).

Almost surely, 2^748779917 is an apocalyptic number.

It is an amenable number.

748779917 is a deficient number, since it is larger than the sum of its proper divisors (1).

748779917 is an equidigital number, since it uses as much as digits as its factorization.

748779917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6223392, while the sum is 59.

The square root of 748779917 is about 27363.8432424979. The cubic root of 748779917 is about 908.0673539181.

The spelling of 748779917 in words is "seven hundred forty-eight million, seven hundred seventy-nine thousand, nine hundred seventeen".