4449869 has 4 divisors (see below), whose sum is σ = 4711644. Its totient is φ = 4188096.

The previous prime is 4449859. The next prime is 4449871. The reversal of 4449869 is 9689444.

It is a happy number.

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 2592100 + 1857769 = 1610^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 4449869 - 2¹⁶ = 4384333 is a prime.

It is a super-2 number, since 2×4449869² = 39602668234322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4449829) 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, 130862 + ... + 130895.

It is an arithmetic number, because the mean of its divisors is an integer number (1177911).

Almost surely, 2^4449869 is an apocalyptic number.

It is an amenable number.

4449869 is a deficient number, since it is larger than the sum of its proper divisors (261775).

4449869 is a wasteful number, since it uses less digits than its factorization.

4449869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261774.

The product of its digits is 248832, while the sum is 44.

The square root of 4449869 is about 2109.4712607665. The cubic root of 4449869 is about 164.4810016153.

The spelling of 4449869 in words is "four million, four hundred forty-nine thousand, eight hundred sixty-nine".