82199893 has 2 divisors, whose sum is σ = 82199894. Its totient is φ = 82199892.

The previous prime is 82199869. The next prime is 82199899. The reversal of 82199893 is 39899128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 38415204 = 6617^2 + 6198^2 .

It is a cyclic number.

It is not a de Polignac number, because 82199893 - 2²⁵ = 48645461 is a prime.

It is a super-2 number, since 2×82199893² = 13513644818422898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82199899) 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, 41099946 + 41099947.

It is an arithmetic number, because the mean of its divisors is an integer number (41099947).

Almost surely, 2^82199893 is an apocalyptic number.

It is an amenable number.

82199893 is a deficient number, since it is larger than the sum of its proper divisors (1).

82199893 is an equidigital number, since it uses as much as digits as its factorization.

82199893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 49.

The square root of 82199893 is about 9066.4156644178. The cubic root of 82199893 is about 434.8008830190.

The spelling of 82199893 in words is "eighty-two million, one hundred ninety-nine thousand, eight hundred ninety-three".