4028449 has 4 divisors (see below), whose sum is σ = 4137364. Its totient is φ = 3919536.

The previous prime is 4028441. The next prime is 4028471. The reversal of 4028449 is 9448204.

4028449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3629025 + 399424 = 1905^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 4028449 - 2³ = 4028441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4028449.

It is not an unprimeable number, because it can be changed into a prime (4028441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54402 + ... + 54475.

It is an arithmetic number, because the mean of its divisors is an integer number (1034341).

Almost surely, 2^4028449 is an apocalyptic number.

It is an amenable number.

4028449 is a deficient number, since it is larger than the sum of its proper divisors (108915).

4028449 is a wasteful number, since it uses less digits than its factorization.

4028449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108914.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 4028449 is about 2007.0996487469. The cubic root of 4028449 is about 159.1155496182.

The spelling of 4028449 in words is "four million, twenty-eight thousand, four hundred forty-nine".