82399399 has 2 divisors, whose sum is σ = 82399400.
Its totient is φ = 82399398.
The previous prime is 82399379. The next prime is 82399403. The reversal of 82399399 is 99399328.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 82399399 - 25 = 82399367 is a prime.
It is a super-2 number, since 2×823993992 = 13579321911122402, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (82399379) 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, 41199699 + 41199700.
It is an arithmetic number, because the mean of its divisors is an integer number (41199700).
Almost surely, 282399399 is an apocalyptic number.
82399399 is a deficient number, since it is larger than the sum of its proper divisors (1).
82399399 is an equidigital number, since it uses as much as digits as its factorization.
82399399 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 944784, while the sum is 52.
The square root of 82399399 is about 9077.4114702375.
The cubic root of 82399399 is about 435.1523648229.
The spelling of 82399399 in words is "eighty-two million, three hundred ninety-nine thousand, three hundred ninety-nine".