2249865 has 36 divisors (see below), whose sum is σ = 4166604. Its totient is φ = 1122816.

The previous prime is 2249861. The next prime is 2249867. The reversal of 2249865 is 5689422.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 451584 + 1798281 = 672^2 + 1341^2 .

It is not a de Polignac number, because 2249865 - 2² = 2249861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2249861) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12919 + ... + 13091.

It is an arithmetic number, because the mean of its divisors is an integer number (115739).

2^2249865 is an apocalyptic number.

It is an amenable number.

2249865 is a deficient number, since it is larger than the sum of its proper divisors (1916739).

2249865 is a wasteful number, since it uses less digits than its factorization.

2249865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 198 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2249865 is about 1499.9549993250. The cubic root of 2249865 is about 131.0344489166.

The spelling of 2249865 in words is "two million, two hundred forty-nine thousand, eight hundred sixty-five".