82907189 has 2 divisors, whose sum is σ = 82907190. Its totient is φ = 82907188.

The previous prime is 82907177. The next prime is 82907219. The reversal of 82907189 is 98170928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77880625 + 5026564 = 8825^2 + 2242^2 .

It is a cyclic number.

It is not a de Polignac number, because 82907189 - 2²⁰ = 81858613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82907119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41453594 + 41453595.

It is an arithmetic number, because the mean of its divisors is an integer number (41453595).

Almost surely, 2^82907189 is an apocalyptic number.

It is an amenable number.

82907189 is a deficient number, since it is larger than the sum of its proper divisors (1).

82907189 is an equidigital number, since it uses as much as digits as its factorization.

82907189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 82907189 is about 9105.3384890404. The cubic root of 82907189 is about 436.0444168901.

The spelling of 82907189 in words is "eighty-two million, nine hundred seven thousand, one hundred eighty-nine".