82397291 has 2 divisors, whose sum is σ = 82397292. Its totient is φ = 82397290.

The previous prime is 82397269. The next prime is 82397303. The reversal of 82397291 is 19279328.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82397291 is a prime.

It is not a weakly prime, because it can be changed into another prime (82397221) 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, 41198645 + 41198646.

It is an arithmetic number, because the mean of its divisors is an integer number (41198646).

Almost surely, 2^82397291 is an apocalyptic number.

82397291 is a deficient number, since it is larger than the sum of its proper divisors (1).

82397291 is an equidigital number, since it uses as much as digits as its factorization.

82397291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 82397291 is about 9077.2953570984. The cubic root of 82397291 is about 435.1486539989.

The spelling of 82397291 in words is "eighty-two million, three hundred ninety-seven thousand, two hundred ninety-one".