747940 has 12 divisors (see below), whose sum is σ = 1570716. Its totient is φ = 299168.

The previous prime is 747919. The next prime is 747941. The reversal of 747940 is 49747.

747940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 238144 + 509796 = 488^2 + 714^2 .

It is not an unprimeable number, because it can be changed into a prime (747941) 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, 18679 + ... + 18718.

It is an arithmetic number, because the mean of its divisors is an integer number (130893).

2⁷⁴⁷⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

747940 is an abundant number, since it is smaller than the sum of its proper divisors (822776).

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

747940 is a wasteful number, since it uses less digits than its factorization.

747940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37406 (or 37404 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 747940 is about 864.8352444252. The cubic root of 747940 is about 90.7727696231.

The spelling of 747940 in words is "seven hundred forty-seven thousand, nine hundred forty".