76989329 has 4 divisors (see below), whose sum is σ = 77013300. Its totient is φ = 76965360.

The previous prime is 76989323. The next prime is 76989359. The reversal of 76989329 is 92398967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54169600 + 22819729 = 7360^2 + 4777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76989329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76989323) 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, 6254 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (19253325).

Almost surely, 2^76989329 is an apocalyptic number.

It is an amenable number.

76989329 is a deficient number, since it is larger than the sum of its proper divisors (23971).

76989329 is a wasteful number, since it uses less digits than its factorization.

76989329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970.

The product of its digits is 1469664, while the sum is 53.

The square root of 76989329 is about 8774.3563296689. The cubic root of 76989329 is about 425.4124328512.

The spelling of 76989329 in words is "seventy-six million, nine hundred eighty-nine thousand, three hundred twenty-nine".