79982079 has 4 divisors (see below), whose sum is σ = 106642776. Its totient is φ = 53321384.

The previous prime is 79982069. The next prime is 79982083. The reversal of 79982079 is 97028997.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79982079 - 2⁹ = 79981567 is a prime.

It is a super-2 number, since 2×79982079² = 12794265922324482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79982069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13330344 + ... + 13330349.

It is an arithmetic number, because the mean of its divisors is an integer number (26660694).

Almost surely, 2^79982079 is an apocalyptic number.

79982079 is a deficient number, since it is larger than the sum of its proper divisors (26660697).

79982079 is a wasteful number, since it uses less digits than its factorization.

79982079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26660696.

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 79982079 is about 8943.2700395325. The cubic root of 79982079 is about 430.8547609168.

The spelling of 79982079 in words is "seventy-nine million, nine hundred eighty-two thousand, seventy-nine".