79938785 has 4 divisors (see below), whose sum is σ = 95926548. Its totient is φ = 63951024.

The previous prime is 79938721. The next prime is 79938797. The reversal of 79938785 is 58783997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58783997 = 241 ⋅243917.

It can be written as a sum of positive squares in 2 ways, for example, as 60824401 + 19114384 = 7799^2 + 4372^2 .

It is a cyclic number.

It is not a de Polignac number, because 79938785 - 2⁶ = 79938721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79938785.

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, 7993874 + ... + 7993883.

It is an arithmetic number, because the mean of its divisors is an integer number (23981637).

Almost surely, 2^79938785 is an apocalyptic number.

It is an amenable number.

79938785 is a deficient number, since it is larger than the sum of its proper divisors (15987763).

79938785 is a wasteful number, since it uses less digits than its factorization.

79938785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15987762.

The product of its digits is 3810240, while the sum is 56.

The square root of 79938785 is about 8940.8492325953. The cubic root of 79938785 is about 430.7770068627. Note that the first 3 decimals are identical.

The spelling of 79938785 in words is "seventy-nine million, nine hundred thirty-eight thousand, seven hundred eighty-five".