3863509 has 6 divisors (see below), whose sum is σ = 4183746. Its totient is φ = 3566160.

The previous prime is 3863501. The next prime is 3863513. The reversal of 3863509 is 9053683.

It can be written as a sum of positive squares in 3 ways, for example, as 272484 + 3591025 = 522^2 + 1895^2 .

It is not a de Polignac number, because 3863509 - 2³ = 3863501 is a prime.

It is a Duffinian number.

3863509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3863501) 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, 11262 + ... + 11599.

It is an arithmetic number, because the mean of its divisors is an integer number (697291).

Almost surely, 2^3863509 is an apocalyptic number.

It is an amenable number.

3863509 is a deficient number, since it is larger than the sum of its proper divisors (320237).

3863509 is a wasteful number, since it uses less digits than its factorization.

3863509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22887 (or 22874 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3863509 is about 1965.5810845651. The cubic root of 3863509 is about 156.9136203809.

The spelling of 3863509 in words is "three million, eight hundred sixty-three thousand, five hundred nine".