79029985 has 4 divisors (see below), whose sum is σ = 94835988. Its totient is φ = 63223984.

The previous prime is 79029971. The next prime is 79029997. The reversal of 79029985 is 58992097.

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 38427601 + 40602384 = 6199^2 + 6372^2 .

It is a cyclic number.

It is not a de Polignac number, because 79029985 - 2⁷ = 79029857 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7902994 + ... + 7903003.

It is an arithmetic number, because the mean of its divisors is an integer number (23708997).

Almost surely, 2^79029985 is an apocalyptic number.

It is an amenable number.

79029985 is a deficient number, since it is larger than the sum of its proper divisors (15806003).

79029985 is a wasteful number, since it uses less digits than its factorization.

79029985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15806002.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 79029985 is about 8889.8810453234. The cubic root of 79029985 is about 429.1383231143.

The spelling of 79029985 in words is "seventy-nine million, twenty-nine thousand, nine hundred eighty-five".