2240869 has 4 divisors (see below), whose sum is σ = 2253996. Its totient is φ = 2227744.

The previous prime is 2240863. The next prime is 2240891. The reversal of 2240869 is 9680422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9680422 = 2 ⋅4840211.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 1113025 = 1062^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240869 - 2⁵ = 2240837 is a prime.

It is a super-2 number, since 2×2240869² = 10042987750322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 2240869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6304 + ... + 6649.

It is an arithmetic number, because the mean of its divisors is an integer number (563499).

2^2240869 is an apocalyptic number.

It is an amenable number.

2240869 is a deficient number, since it is larger than the sum of its proper divisors (13127).

2240869 is a wasteful number, since it uses less digits than its factorization.

2240869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13126.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2240869 is about 1496.9532390826. The cubic root of 2240869 is about 130.8595701999.

The spelling of 2240869 in words is "two million, two hundred forty thousand, eight hundred sixty-nine".