79006789 has 4 divisors (see below), whose sum is σ = 79334860. Its totient is φ = 78678720.

The previous prime is 79006777. The next prime is 79006793. The reversal of 79006789 is 98760097.

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 32970564 + 46036225 = 5742^2 + 6785^2 .

It is a cyclic number.

It is not a de Polignac number, because 79006789 - 2⁷ = 79006661 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 (79006799) 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, 163674 + ... + 164155.

It is an arithmetic number, because the mean of its divisors is an integer number (19833715).

Almost surely, 2^79006789 is an apocalyptic number.

It is an amenable number.

79006789 is a deficient number, since it is larger than the sum of its proper divisors (328071).

79006789 is a wasteful number, since it uses less digits than its factorization.

79006789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328070.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 79006789 is about 8888.5763201989. The cubic root of 79006789 is about 429.0963337074.

The spelling of 79006789 in words is "seventy-nine million, six thousand, seven hundred eighty-nine".