749509169 has 16 divisors (see below), whose sum is σ = 798228480. Its totient is φ = 701764560.

The previous prime is 749509133. The next prime is 749509181. The reversal of 749509169 is 961905947.

It is a cyclic number.

It is not a de Polignac number, because 749509169 - 2⁸ = 749508913 is a prime.

It is a super-2 number, since 2×749509169² = 1123527988830141122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749509109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923774 + ... + 924584.

It is an arithmetic number, because the mean of its divisors is an integer number (49889280).

Almost surely, 2^749509169 is an apocalyptic number.

It is an amenable number.

749509169 is a deficient number, since it is larger than the sum of its proper divisors (48719311).

749509169 is a wasteful number, since it uses less digits than its factorization.

749509169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 749509169 is about 27377.1651015952. The cubic root of 749509169 is about 908.3620533597.

The spelling of 749509169 in words is "seven hundred forty-nine million, five hundred nine thousand, one hundred sixty-nine".