79365889 has 4 divisors (see below), whose sum is σ = 80068356. Its totient is φ = 78663424.

The previous prime is 79365887. The next prime is 79365931. The reversal of 79365889 is 98856397.

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 36240400 + 43125489 = 6020^2 + 6567^2 .

It is a cyclic number.

It is not a de Polignac number, because 79365889 - 2¹ = 79365887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79365883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351064 + ... + 351289.

It is an arithmetic number, because the mean of its divisors is an integer number (20017089).

Almost surely, 2^79365889 is an apocalyptic number.

It is an amenable number.

79365889 is a deficient number, since it is larger than the sum of its proper divisors (702467).

79365889 is a wasteful number, since it uses less digits than its factorization.

79365889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702466.

The product of its digits is 3265920, while the sum is 55.

The square root of 79365889 is about 8908.7535042788. The cubic root of 79365889 is about 429.7454577883.

The spelling of 79365889 in words is "seventy-nine million, three hundred sixty-five thousand, eight hundred eighty-nine".