4485509 has 6 divisors (see below), whose sum is σ = 5217894. Its totient is φ = 3844680.

The previous prime is 4485497. The next prime is 4485527. The reversal of 4485509 is 9055844.

It can be written as a sum of positive squares in only one way, i.e., 3441025 + 1044484 = 1855^2 + 1022^2 .

It is not a de Polignac number, because 4485509 - 2¹⁶ = 4419973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4485589) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45722 + ... + 45819.

It is an arithmetic number, because the mean of its divisors is an integer number (869649).

Almost surely, 2^4485509 is an apocalyptic number.

4485509 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4485509 is a deficient number, since it is larger than the sum of its proper divisors (732385).

4485509 is an equidigital number, since it uses as much as digits as its factorization.

4485509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91555 (or 91548 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 4485509 is about 2117.9020279512. The cubic root of 4485509 is about 164.9189562207.

It can be divided in two parts, 4485 and 509, that added together give a palindrome (4994).

The spelling of 4485509 in words is "four million, four hundred eighty-five thousand, five hundred nine".