82000397 has 4 divisors (see below), whose sum is σ = 82134780. Its totient is φ = 81866016.

The previous prime is 82000393. The next prime is 82000403. The reversal of 82000397 is 79300028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23951236 + 58049161 = 4894^2 + 7619^2 .

It is a cyclic number.

It is not a de Polignac number, because 82000397 - 2² = 82000393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82000393) 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 in 3 ways as a sum of consecutive naturals, for example, 66272 + ... + 67497.

It is an arithmetic number, because the mean of its divisors is an integer number (20533695).

Almost surely, 2^82000397 is an apocalyptic number.

It is an amenable number.

82000397 is a deficient number, since it is larger than the sum of its proper divisors (134383).

82000397 is a wasteful number, since it uses less digits than its factorization.

82000397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134382.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 82000397 is about 9055.4070587688. The cubic root of 82000397 is about 434.4488496973.

The spelling of 82000397 in words is "eighty-two million, three hundred ninety-seven", and thus it is an aban number.