747789 has 12 divisors (see below), whose sum is σ = 1160064. Its totient is φ = 427224.

The previous prime is 747781. The next prime is 747811. The reversal of 747789 is 987747.

747789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 747789 - 2³ = 747781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2397 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (96672).

2⁷⁴⁷⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

747789 is a deficient number, since it is larger than the sum of its proper divisors (412275).

747789 is a wasteful number, since it uses less digits than its factorization.

747789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104 (or 5097 counting only the distinct ones).

The product of its digits is 98784, while the sum is 42.

The square root of 747789 is about 864.7479401537. The cubic root of 747789 is about 90.7666605722.

Subtracting from 747789 its sum of digits (42), we obtain a palindrome (747747).

The spelling of 747789 in words is "seven hundred forty-seven thousand, seven hundred eighty-nine".