82644229 has 6 divisors (see below), whose sum is σ = 85593170. Its totient is φ = 79793616.

The previous prime is 82644223. The next prime is 82644239. The reversal of 82644229 is 92244628.

It can be written as a sum of positive squares in 3 ways, for example, as 324900 + 82319329 = 570^2 + 9073^2 .

It is not a de Polignac number, because 82644229 - 2⁵ = 82644197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82644223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48294 + ... + 49975.

Almost surely, 2^82644229 is an apocalyptic number.

It is an amenable number.

82644229 is a deficient number, since it is larger than the sum of its proper divisors (2948941).

82644229 is an equidigital number, since it uses as much as digits as its factorization.

82644229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98327 (or 98298 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 82644229 is about 9090.8871404280. The cubic root of 82644229 is about 435.5829222093.

The spelling of 82644229 in words is "eighty-two million, six hundred forty-four thousand, two hundred twenty-nine".