79994389 has 8 divisors (see below), whose sum is σ = 84450240. Its totient is φ = 75563136.

The previous prime is 79994371. The next prime is 79994399. The reversal of 79994389 is 98349997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79994389 - 2⁹ = 79993877 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 (79994399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744 + ... + 12670.

It is an arithmetic number, because the mean of its divisors is an integer number (10556280).

Almost surely, 2^79994389 is an apocalyptic number.

It is an amenable number.

79994389 is a deficient number, since it is larger than the sum of its proper divisors (4455851).

79994389 is a wasteful number, since it uses less digits than its factorization.

79994389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299.

The product of its digits is 4408992, while the sum is 58.

The square root of 79994389 is about 8943.9582400635. The cubic root of 79994389 is about 430.8768639933.

The spelling of 79994389 in words is "seventy-nine million, nine hundred ninety-four thousand, three hundred eighty-nine".