749749171 has 2 divisors, whose sum is σ = 749749172. Its totient is φ = 749749170.

The previous prime is 749749163. The next prime is 749749207. The reversal of 749749171 is 171947947.

It is a weak prime.

It is an emirp because it is prime and its reverse (171947947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749749171 - 2³ = 749749163 is a prime.

It is not a weakly prime, because it can be changed into another prime (749749111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374874585 + 374874586.

It is an arithmetic number, because the mean of its divisors is an integer number (374874586).

Almost surely, 2^749749171 is an apocalyptic number.

749749171 is a deficient number, since it is larger than the sum of its proper divisors (1).

749749171 is an equidigital number, since it uses as much as digits as its factorization.

749749171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 49.

The square root of 749749171 is about 27381.5480022587. The cubic root of 749749171 is about 908.4589992246.

The spelling of 749749171 in words is "seven hundred forty-nine million, seven hundred forty-nine thousand, one hundred seventy-one".