749891408 has 20 divisors (see below), whose sum is σ = 1660474080. Its totient is φ = 321381984.

The previous prime is 749891381. The next prime is 749891431. The reversal of 749891408 is 804198947.

749891408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3347618 + ... + 3347841.

It is an arithmetic number, because the mean of its divisors is an integer number (83023704).

Almost surely, 2^749891408 is an apocalyptic number.

It is an amenable number.

749891408 is an abundant number, since it is smaller than the sum of its proper divisors (910582672).

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

749891408 is a wasteful number, since it uses less digits than its factorization.

749891408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695474 (or 6695468 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 749891408 is about 27384.1451938891. The cubic root of 749891408 is about 908.5164443530.

The spelling of 749891408 in words is "seven hundred forty-nine million, eight hundred ninety-one thousand, four hundred eight".