82299649 has 2 divisors, whose sum is σ = 82299650. Its totient is φ = 82299648.

The previous prime is 82299647. The next prime is 82299653. The reversal of 82299649 is 94699228.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82029249 + 270400 = 9057^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 82299649 - 2¹ = 82299647 is a prime.

Together with 82299647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (82299641) 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, 41149824 + 41149825.

It is an arithmetic number, because the mean of its divisors is an integer number (41149825).

Almost surely, 2^82299649 is an apocalyptic number.

It is an amenable number.

82299649 is a deficient number, since it is larger than the sum of its proper divisors (1).

82299649 is an equidigital number, since it uses as much as digits as its factorization.

82299649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 82299649 is about 9071.9153986355. The cubic root of 82299649 is about 434.9767002097.

The spelling of 82299649 in words is "eighty-two million, two hundred ninety-nine thousand, six hundred forty-nine".