749509424 has 20 divisors (see below), whose sum is σ = 1454244720. Its totient is φ = 374220480.

The previous prime is 749509399. The next prime is 749509429. The reversal of 749509424 is 424905947.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (749509429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21692 + ... + 44379.

It is an arithmetic number, because the mean of its divisors is an integer number (72712236).

Almost surely, 2^749509424 is an apocalyptic number.

It is an amenable number.

749509424 is a deficient number, since it is larger than the sum of its proper divisors (704735296).

749509424 is a wasteful number, since it uses less digits than its factorization.

749509424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66788 (or 66782 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 749509424 is about 27377.1697587607. The cubic root of 749509424 is about 908.3621563748.

The spelling of 749509424 in words is "seven hundred forty-nine million, five hundred nine thousand, four hundred twenty-four".