749254909 has 12 divisors (see below), whose sum is σ = 813252000. Its totient is φ = 689976144.

The previous prime is 749254901. The next prime is 749254927. The reversal of 749254909 is 909452947.

It is not a de Polignac number, because 749254909 - 2³ = 749254901 is a prime.

It is a super-2 number, since 2×749254909² = 1122765837321196562, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749254901) 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 in 11 ways as a sum of consecutive naturals, for example, 69142 + ... + 79240.

It is an arithmetic number, because the mean of its divisors is an integer number (67771000).

Almost surely, 2^749254909 is an apocalyptic number.

It is an amenable number.

749254909 is a deficient number, since it is larger than the sum of its proper divisors (63997091).

749254909 is a wasteful number, since it uses less digits than its factorization.

749254909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10564 (or 10551 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 749254909 is about 27372.5210567094. The cubic root of 749254909 is about 908.2593255716.

The spelling of 749254909 in words is "seven hundred forty-nine million, two hundred fifty-four thousand, nine hundred nine".