82105449 has 8 divisors (see below), whose sum is σ = 110478720. Its totient is φ = 54234576.

The previous prime is 82105417. The next prime is 82105477. The reversal of 82105449 is 94450128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82105449 - 2⁵ = 82105417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82105489) 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 in 7 ways as a sum of consecutive naturals, for example, 125217 + ... + 125870.

It is an arithmetic number, because the mean of its divisors is an integer number (13809840).

Almost surely, 2^82105449 is an apocalyptic number.

It is an amenable number.

82105449 is a deficient number, since it is larger than the sum of its proper divisors (28373271).

82105449 is a wasteful number, since it uses less digits than its factorization.

82105449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251199.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 82105449 is about 9061.2057144731. The cubic root of 82105449 is about 434.6342969479.

The spelling of 82105449 in words is "eighty-two million, one hundred five thousand, four hundred forty-nine".