79867109 has 12 divisors (see below), whose sum is σ = 96947424. Its totient is φ = 65480184.

The previous prime is 79867103. The next prime is 79867111. The reversal of 79867109 is 90176897.

It is not a de Polignac number, because 79867109 - 2⁴ = 79867093 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79867103) 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 11 ways as a sum of consecutive naturals, for example, 34307 + ... + 36560.

It is an arithmetic number, because the mean of its divisors is an integer number (8078952).

Almost surely, 2^79867109 is an apocalyptic number.

It is an amenable number.

79867109 is a deficient number, since it is larger than the sum of its proper divisors (17080315).

79867109 is a wasteful number, since it uses less digits than its factorization.

79867109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70904 (or 70897 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 79867109 is about 8936.8399896160. The cubic root of 79867109 is about 430.6482182918.

The spelling of 79867109 in words is "seventy-nine million, eight hundred sixty-seven thousand, one hundred nine".