79948993 has 4 divisors (see below), whose sum is σ = 80682580. Its totient is φ = 79215408.

The previous prime is 79948987. The next prime is 79949033. The reversal of 79948993 is 39984997.

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 48678529 + 31270464 = 6977^2 + 5592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79948993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79948933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366630 + ... + 366847.

It is an arithmetic number, because the mean of its divisors is an integer number (20170645).

Almost surely, 2^79948993 is an apocalyptic number.

It is an amenable number.

79948993 is a deficient number, since it is larger than the sum of its proper divisors (733587).

79948993 is a wasteful number, since it uses less digits than its factorization.

79948993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733586.

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

The square root of 79948993 is about 8941.4200773703. The cubic root of 79948993 is about 430.7953424950.

The spelling of 79948993 in words is "seventy-nine million, nine hundred forty-eight thousand, nine hundred ninety-three".