82971169 has 8 divisors (see below), whose sum is σ = 89341920. Its totient is φ = 76766016.

The previous prime is 82971137. The next prime is 82971179. The reversal of 82971169 is 96117928.

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

It is not a de Polignac number, because 82971169 - 2⁵ = 82971137 is a prime.

It is a super-2 number, since 2×82971169² = 13768429770453122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82971179) 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, 40359 + ... + 42364.

It is an arithmetic number, because the mean of its divisors is an integer number (11167740).

Almost surely, 2^82971169 is an apocalyptic number.

It is an amenable number.

82971169 is a deficient number, since it is larger than the sum of its proper divisors (6370751).

82971169 is a wasteful number, since it uses less digits than its factorization.

82971169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82799.

The product of its digits is 54432, while the sum is 43.

The square root of 82971169 is about 9108.8511350225. The cubic root of 82971169 is about 436.1565541238.

The spelling of 82971169 in words is "eighty-two million, nine hundred seventy-one thousand, one hundred sixty-nine".