82156959 has 12 divisors (see below), whose sum is σ = 118755000. Its totient is φ = 54732624.

The previous prime is 82156939. The next prime is 82156999. The reversal of 82156959 is 95965128.

82156959 is a `hidden beast` number, since 82 + 1 + 569 + 5 + 9 = 666.

It is not a de Polignac number, because 82156959 - 2⁵ = 82156927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82156939) 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 11 ways as a sum of consecutive naturals, for example, 16717 + ... + 21065.

It is an arithmetic number, because the mean of its divisors is an integer number (9896250).

Almost surely, 2^82156959 is an apocalyptic number.

82156959 is a deficient number, since it is larger than the sum of its proper divisors (36598041).

82156959 is a wasteful number, since it uses less digits than its factorization.

82156959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454 (or 6451 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 82156959 is about 9064.0476057885. The cubic root of 82156959 is about 434.7251692457.

The spelling of 82156959 in words is "eighty-two million, one hundred fifty-six thousand, nine hundred fifty-nine".