82315399 has 2 divisors, whose sum is σ = 82315400. Its totient is φ = 82315398.

The previous prime is 82315379. The next prime is 82315403. The reversal of 82315399 is 99351328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82315399 - 2⁷ = 82315271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82315319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41157699 + 41157700.

It is an arithmetic number, because the mean of its divisors is an integer number (41157700).

Almost surely, 2^82315399 is an apocalyptic number.

82315399 is a deficient number, since it is larger than the sum of its proper divisors (1).

82315399 is an equidigital number, since it uses as much as digits as its factorization.

82315399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 82315399 is about 9072.7834207590. The cubic root of 82315399 is about 435.0044461606.

The spelling of 82315399 in words is "eighty-two million, three hundred fifteen thousand, three hundred ninety-nine".