993072789 has 6 divisors (see below), whose sum is σ = 1434438486. Its totient is φ = 662048520.

The previous prime is 993072779. The next prime is 993072797. The reversal of 993072789 is 987270399.

993072789 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 only one way, i.e., 809687025 + 183385764 = 28455^2 + 13542^2 .

It is not a de Polignac number, because 993072789 - 2⁵ = 993072757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993072779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55170702 + ... + 55170719.

It is an arithmetic number, because the mean of its divisors is an integer number (239073081).

Almost surely, 2^993072789 is an apocalyptic number.

It is an amenable number.

993072789 is a deficient number, since it is larger than the sum of its proper divisors (441365697).

993072789 is a wasteful number, since it uses less digits than its factorization.

993072789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110341427 (or 110341424 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 993072789 is about 31513.0574365611. The cubic root of 993072789 is about 997.6855772464.

The spelling of 993072789 in words is "nine hundred ninety-three million, seventy-two thousand, seven hundred eighty-nine".