79524089 has 4 divisors (see below), whose sum is σ = 80227956. Its totient is φ = 78820224.

The previous prime is 79524077. The next prime is 79524091. The reversal of 79524089 is 98042597.

It is a happy number.

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 9048064 + 70476025 = 3008^2 + 8395^2 .

It is a cyclic number.

It is not a de Polignac number, because 79524089 - 2²⁰ = 78475513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79524689) 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, 351764 + ... + 351989.

It is an arithmetic number, because the mean of its divisors is an integer number (20056989).

Almost surely, 2^79524089 is an apocalyptic number.

It is an amenable number.

79524089 is a deficient number, since it is larger than the sum of its proper divisors (703867).

79524089 is a wasteful number, since it uses less digits than its factorization.

79524089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703866.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 79524089 is about 8917.6279917924. The cubic root of 79524089 is about 430.0308054368.

The spelling of 79524089 in words is "seventy-nine million, five hundred twenty-four thousand, eighty-nine".