79909827 has 8 divisors (see below), whose sum is σ = 107830464. Its totient is φ = 52631208.

The previous prime is 79909811. The next prime is 79909829. The reversal of 79909827 is 72890997.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79909827 - 2⁴ = 79909811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79909827.

It is not an unprimeable number, because it can be changed into a prime (79909829) 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 7 ways as a sum of consecutive naturals, for example, 160213 + ... + 160710.

It is an arithmetic number, because the mean of its divisors is an integer number (13478808).

Almost surely, 2^79909827 is an apocalyptic number.

79909827 is a deficient number, since it is larger than the sum of its proper divisors (27920637).

79909827 is a wasteful number, since it uses less digits than its factorization.

79909827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321009.

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

The square root of 79909827 is about 8939.2296647977. The cubic root of 79909827 is about 430.7249839422.

The spelling of 79909827 in words is "seventy-nine million, nine hundred nine thousand, eight hundred twenty-seven".