4081249 has 4 divisors (see below), whose sum is σ = 4102164. Its totient is φ = 4060336.

The previous prime is 4081229. The next prime is 4081261. The reversal of 4081249 is 9421804.

4081249 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 2050624 + 2030625 = 1432^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081249 - 2⁹ = 4080737 is a prime.

It is a Duffinian number.

4081249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4081229) 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, 10162 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (1025541).

Almost surely, 2^4081249 is an apocalyptic number.

It is an amenable number.

4081249 is a deficient number, since it is larger than the sum of its proper divisors (20915).

4081249 is a wasteful number, since it uses less digits than its factorization.

4081249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20914.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4081249 is about 2020.2101375847. The cubic root of 4081249 is about 159.8076986563.

The spelling of 4081249 in words is "four million, eighty-one thousand, two hundred forty-nine".