82811299 has 2 divisors, whose sum is σ = 82811300. Its totient is φ = 82811298.

The previous prime is 82811237. The next prime is 82811371. The reversal of 82811299 is 99211828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82811299 - 2⁷ = 82811171 is a prime.

It is a super-2 number, since 2×82811299² = 13715422484134802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82811219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41405649 + 41405650.

It is an arithmetic number, because the mean of its divisors is an integer number (41405650).

Almost surely, 2^82811299 is an apocalyptic number.

82811299 is a deficient number, since it is larger than the sum of its proper divisors (1).

82811299 is an equidigital number, since it uses as much as digits as its factorization.

82811299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 40.

The square root of 82811299 is about 9100.0713733465. The cubic root of 82811299 is about 435.8762431769.

The spelling of 82811299 in words is "eighty-two million, eight hundred eleven thousand, two hundred ninety-nine".