82179109 has 8 divisors (see below), whose sum is σ = 87123968. Its totient is φ = 77377680.

The previous prime is 82179107. The next prime is 82179113. The reversal of 82179109 is 90197128.

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

It is a cyclic number.

It is not a de Polignac number, because 82179109 - 2¹ = 82179107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82179107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34677 + ... + 36970.

It is an arithmetic number, because the mean of its divisors is an integer number (10890496).

Almost surely, 2^82179109 is an apocalyptic number.

It is an amenable number.

82179109 is a deficient number, since it is larger than the sum of its proper divisors (4944859).

82179109 is a wasteful number, since it uses less digits than its factorization.

82179109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71715.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 82179109 is about 9065.2693837525. The cubic root of 82179109 is about 434.7642338906.

The spelling of 82179109 in words is "eighty-two million, one hundred seventy-nine thousand, one hundred nine".