749905 has 16 divisors (see below), whose sum is σ = 987840. Its totient is φ = 543168.

The previous prime is 749899. The next prime is 749909. The reversal of 749905 is 509947.

749905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 749905 - 2⁹ = 749393 is a prime.

749905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (749909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5326 + ... + 5464.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2⁷⁴⁹⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

749905 is a deficient number, since it is larger than the sum of its proper divisors (237935).

749905 is a wasteful number, since it uses less digits than its factorization.

749905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 749905 is about 865.9705537719. The cubic root of 749905 is about 90.8521933362.

The spelling of 749905 in words is "seven hundred forty-nine thousand, nine hundred five".