84280449 has 16 divisors (see below), whose sum is σ = 122941440. Its totient is φ = 50932560.

The previous prime is 84280433. The next prime is 84280459. The reversal of 84280449 is 94408248.

It is not a de Polignac number, because 84280449 - 2⁴ = 84280433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84280429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8632 + ... + 15590.

It is an arithmetic number, because the mean of its divisors is an integer number (7683840).

Almost surely, 2^84280449 is an apocalyptic number.

It is an amenable number.

84280449 is a deficient number, since it is larger than the sum of its proper divisors (38660991).

84280449 is a wasteful number, since it uses less digits than its factorization.

84280449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 84280449 is about 9180.4383882253. The cubic root of 84280449 is about 438.4387661327.

The spelling of 84280449 in words is "eighty-four million, two hundred eighty thousand, four hundred forty-nine".