749813440 has 56 divisors (see below), whose sum is σ = 1787834880. Its totient is φ = 299532288.

The previous prime is 749813437. The next prime is 749813447. The reversal of 749813440 is 44318947.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 749813393 and 749813402.

It is not an unprimeable number, because it can be changed into a prime (749813447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450049 + ... + 451711.

Almost surely, 2^749813440 is an apocalyptic number.

It is an amenable number.

749813440 is an abundant number, since it is smaller than the sum of its proper divisors (1038021440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749813440 is a wasteful number, since it uses less digits than its factorization.

749813440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 749813440 is about 27382.7215594068. The cubic root of 749813440 is about 908.4849563871.

The spelling of 749813440 in words is "seven hundred forty-nine million, eight hundred thirteen thousand, four hundred forty".