82591349 has 2 divisors, whose sum is σ = 82591350. Its totient is φ = 82591348.

The previous prime is 82591297. The next prime is 82591351. The reversal of 82591349 is 94319528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 18879025 = 7982^2 + 4345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82591349 is a prime.

Together with 82591351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82591849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41295674 + 41295675.

It is an arithmetic number, because the mean of its divisors is an integer number (41295675).

Almost surely, 2^82591349 is an apocalyptic number.

It is an amenable number.

82591349 is a deficient number, since it is larger than the sum of its proper divisors (1).

82591349 is an equidigital number, since it uses as much as digits as its factorization.

82591349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 82591349 is about 9087.9782680198. The cubic root of 82591349 is about 435.4899996517.

The spelling of 82591349 in words is "eighty-two million, five hundred ninety-one thousand, three hundred forty-nine".