79918493 has 4 divisors (see below), whose sum is σ = 80253120. Its totient is φ = 79583868.

The previous prime is 79918477. The next prime is 79918507. The reversal of 79918493 is 39481997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79918493 - 2⁴ = 79918477 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 (79918453) 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, 166955 + ... + 167432.

It is an arithmetic number, because the mean of its divisors is an integer number (20063280).

Almost surely, 2^79918493 is an apocalyptic number.

It is an amenable number.

79918493 is a deficient number, since it is larger than the sum of its proper divisors (334627).

79918493 is a wasteful number, since it uses less digits than its factorization.

79918493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334626.

The product of its digits is 489888, while the sum is 50.

The square root of 79918493 is about 8939.7143690389. The cubic root of 79918493 is about 430.7405536909.

The spelling of 79918493 in words is "seventy-nine million, nine hundred eighteen thousand, four hundred ninety-three".