749042408 has 32 divisors (see below), whose sum is σ = 1417029120. Its totient is φ = 371184000.

The previous prime is 749042387. The next prime is 749042417. The reversal of 749042408 is 804240947.

It is a super-2 number, since 2×749042408² = 1122129057964876928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505028 + ... + 506508.

It is an arithmetic number, because the mean of its divisors is an integer number (44282160).

Almost surely, 2^749042408 is an apocalyptic number.

It is an amenable number.

749042408 is a deficient number, since it is larger than the sum of its proper divisors (667986712).

749042408 is a wasteful number, since it uses less digits than its factorization.

749042408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009 (or 2005 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 749042408 is about 27368.6391331392. The cubic root of 749042408 is about 908.1734516979.

The spelling of 749042408 in words is "seven hundred forty-nine million, forty-two thousand, four hundred eight".