749449931 has 2 divisors, whose sum is σ = 749449932. Its totient is φ = 749449930.

The previous prime is 749449849. The next prime is 749449933. The reversal of 749449931 is 139944947.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 749449931 - 2²⁶ = 682341067 is a prime.

It is a super-2 number, since 2×749449931² = 1123350398151809522, which contains 22 as substring.

Together with 749449933, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 749449931.

It is not a weakly prime, because it can be changed into another prime (749449933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374724965 + 374724966.

It is an arithmetic number, because the mean of its divisors is an integer number (374724966).

Almost surely, 2^749449931 is an apocalyptic number.

749449931 is a deficient number, since it is larger than the sum of its proper divisors (1).

749449931 is an equidigital number, since it uses as much as digits as its factorization.

749449931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 749449931 is about 27376.0831931816. The cubic root of 749449931 is about 908.3381217116.

The spelling of 749449931 in words is "seven hundred forty-nine million, four hundred forty-nine thousand, nine hundred thirty-one".