82747449 has 24 divisors (see below), whose sum is σ = 126977760. Its totient is φ = 51746688.

The previous prime is 82747403. The next prime is 82747501. The reversal of 82747449 is 94474728.

It is not a de Polignac number, because 82747449 - 2¹¹ = 82745401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82747349) 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 23 ways as a sum of consecutive naturals, for example, 57274 + ... + 58700.

It is an arithmetic number, because the mean of its divisors is an integer number (5290740).

Almost surely, 2^82747449 is an apocalyptic number.

It is an amenable number.

82747449 is a deficient number, since it is larger than the sum of its proper divisors (44230311).

82747449 is a wasteful number, since it uses less digits than its factorization.

82747449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829 (or 1826 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 82747449 is about 9096.5624826085. The cubic root of 82747449 is about 435.7641898127.

The spelling of 82747449 in words is "eighty-two million, seven hundred forty-seven thousand, four hundred forty-nine".