749791 has 16 divisors (see below), whose sum is σ = 912384. Its totient is φ = 602784.

The previous prime is 749779. The next prime is 749803. The reversal of 749791 is 197947.

749791 = 351² + 352² + ... + 356².

It is an interprime number because it is at equal distance from previous prime (749779) and next prime (749803).

It is not a de Polignac number, because 749791 - 2⁹ = 749279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14121 + ... + 14173.

It is an arithmetic number, because the mean of its divisors is an integer number (57024).

2⁷⁴⁹⁷⁹¹ is an apocalyptic number.

749791 is a deficient number, since it is larger than the sum of its proper divisors (162593).

749791 is a wasteful number, since it uses less digits than its factorization.

749791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150.

The product of its digits is 15876, while the sum is 37.

The square root of 749791 is about 865.9047291706. The cubic root of 749791 is about 90.8475893419.

It can be divided in two parts, 749 and 791, that added together give a triangular number (1540 = T₅₅).

The spelling of 749791 in words is "seven hundred forty-nine thousand, seven hundred ninety-one".