82891349 has 2 divisors, whose sum is σ = 82891350. Its totient is φ = 82891348.

The previous prime is 82891343. The next prime is 82891363. The reversal of 82891349 is 94319828.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45900625 + 36990724 = 6775^2 + 6082^2 .

It is a cyclic number.

It is not a de Polignac number, because 82891349 - 2²⁰ = 81842773 is a prime.

It is a super-3 number, since 3×82891349³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82891343) 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 as a sum of consecutive naturals, namely, 41445674 + 41445675.

It is an arithmetic number, because the mean of its divisors is an integer number (41445675).

Almost surely, 2^82891349 is an apocalyptic number.

It is an amenable number.

82891349 is a deficient number, since it is larger than the sum of its proper divisors (1).

82891349 is an equidigital number, since it uses as much as digits as its factorization.

82891349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 82891349 is about 9104.4686280969. The cubic root of 82891349 is about 436.0166453399.

The spelling of 82891349 in words is "eighty-two million, eight hundred ninety-one thousand, three hundred forty-nine".