76989589 has 4 divisors (see below), whose sum is σ = 77008140. Its totient is φ = 76971040.

The previous prime is 76989569. The next prime is 76989611. The reversal of 76989589 is 98598967.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98598967 = 7207 ⋅13681.

It can be written as a sum of positive squares in 2 ways, for example, as 47472100 + 29517489 = 6890^2 + 5433^2 .

It is a cyclic number.

It is not a de Polignac number, because 76989589 - 2⁵ = 76989557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76989509) 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, 129 + ... + 12409.

It is an arithmetic number, because the mean of its divisors is an integer number (19252035).

Almost surely, 2^76989589 is an apocalyptic number.

It is an amenable number.

76989589 is a deficient number, since it is larger than the sum of its proper divisors (18551).

76989589 is a wasteful number, since it uses less digits than its factorization.

76989589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18550.

The product of its digits is 9797760, while the sum is 61.

The square root of 76989589 is about 8774.3711455580. The cubic root of 76989589 is about 425.4129117362.

It can be divided in two parts, 7698958 and 9, that added together give a palindrome (7698967).

The spelling of 76989589 in words is "seventy-six million, nine hundred eighty-nine thousand, five hundred eighty-nine".