747874789 has 4 divisors (see below), whose sum is σ = 787236640. Its totient is φ = 708512940.

The previous prime is 747874741. The next prime is 747874817. The reversal of 747874789 is 987478747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 747874789 - 2⁷ = 747874661 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747874289) 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, 19680897 + ... + 19680934.

It is an arithmetic number, because the mean of its divisors is an integer number (196809160).

Almost surely, 2^747874789 is an apocalyptic number.

It is an amenable number.

747874789 is a deficient number, since it is larger than the sum of its proper divisors (39361851).

747874789 is a wasteful number, since it uses less digits than its factorization.

747874789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39361850.

The product of its digits is 22127616, while the sum is 61.

The square root of 747874789 is about 27347.2994827643. The cubic root of 747874789 is about 907.7013146362.

The spelling of 747874789 in words is "seven hundred forty-seven million, eight hundred seventy-four thousand, seven hundred eighty-nine".