79123289 has 12 divisors (see below), whose sum is σ = 96044544. Its totient is φ = 64870344.

The previous prime is 79123273. The next prime is 79123301. The reversal of 79123289 is 98232197.

It is a happy number.

It is not a de Polignac number, because 79123289 - 2⁴ = 79123273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79123249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33977 + ... + 36230.

It is an arithmetic number, because the mean of its divisors is an integer number (8003712).

Almost surely, 2^79123289 is an apocalyptic number.

It is an amenable number.

79123289 is a deficient number, since it is larger than the sum of its proper divisors (16921255).

79123289 is a wasteful number, since it uses less digits than its factorization.

79123289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70244 (or 70237 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 79123289 is about 8895.1272615967. The cubic root of 79123289 is about 429.3071391024.

The spelling of 79123289 in words is "seventy-nine million, one hundred twenty-three thousand, two hundred eighty-nine".