4499865 has 36 divisors (see below), whose sum is σ = 8261604. Its totient is φ = 2265408.

The previous prime is 4499863. The next prime is 4499879. The reversal of 4499865 is 5689944.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1172889 + 3326976 = 1083^2 + 1824^2 .

It is not a de Polignac number, because 4499865 - 2¹ = 4499863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4499865.

It is not an unprimeable number, because it can be changed into a prime (4499863) 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, 16107 + ... + 16383.

It is an arithmetic number, because the mean of its divisors is an integer number (229489).

Almost surely, 2^4499865 is an apocalyptic number.

4499865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4499865 is a deficient number, since it is larger than the sum of its proper divisors (3761739).

4499865 is a wasteful number, since it uses less digits than its factorization.

4499865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 304 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 4499865 is about 2121.2885235158. The cubic root of 4499865 is about 165.0947114646.

The spelling of 4499865 in words is "four million, four hundred ninety-nine thousand, eight hundred sixty-five".