3870509 has 16 divisors (see below), whose sum is σ = 4510080. Its totient is φ = 3294720.

The previous prime is 3870499. The next prime is 3870527. The reversal of 3870509 is 9050783.

It is a cyclic number.

It is not a de Polignac number, because 3870509 - 2²⁰ = 2821933 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7169 + ... + 7689.

It is an arithmetic number, because the mean of its divisors is an integer number (281880).

Almost surely, 2^3870509 is an apocalyptic number.

It is an amenable number.

3870509 is a deficient number, since it is larger than the sum of its proper divisors (639571).

3870509 is a wasteful number, since it uses less digits than its factorization.

3870509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 3870509 is about 1967.3609226576. The cubic root of 3870509 is about 157.0083298487.

The spelling of 3870509 in words is "three million, eight hundred seventy thousand, five hundred nine".