79041789 has 18 divisors (see below), whose sum is σ = 121286490. Its totient is φ = 49593216.

The previous prime is 79041779. The next prime is 79041793. The reversal of 79041789 is 98714097.

It can be written as a sum of positive squares in 3 ways, for example, as 39879225 + 39162564 = 6315^2 + 6258^2 .

It is not a de Polignac number, because 79041789 - 2⁴ = 79041773 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79041749) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12594 + ... + 17795.

Almost surely, 2^79041789 is an apocalyptic number.

It is an amenable number.

79041789 is a deficient number, since it is larger than the sum of its proper divisors (42244701).

79041789 is a wasteful number, since it uses less digits than its factorization.

79041789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30429 (or 30409 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 79041789 is about 8890.5449214320. The cubic root of 79041789 is about 429.1596875647.

The spelling of 79041789 in words is "seventy-nine million, forty-one thousand, seven hundred eighty-nine".