3872709 has 12 divisors (see below), whose sum is σ = 5724576. Its totient is φ = 2521512.

The previous prime is 3872681. The next prime is 3872731. The reversal of 3872709 is 9072783.

3872709 is a `hidden beast` number, since 387 + 270 + 9 = 666.

It is not a de Polignac number, because 3872709 - 2⁵ = 3872677 is a prime.

It is an Ulam number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870709) 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 11 ways as a sum of consecutive naturals, for example, 4617 + ... + 5390.

It is an arithmetic number, because the mean of its divisors is an integer number (477048).

Almost surely, 2^3872709 is an apocalyptic number.

It is an amenable number.

3872709 is a deficient number, since it is larger than the sum of its proper divisors (1851867).

3872709 is a wasteful number, since it uses less digits than its factorization.

3872709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056 (or 10053 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 3872709 is about 1967.9199678849. The cubic root of 3872709 is about 157.0380720954.

The spelling of 3872709 in words is "three million, eight hundred seventy-two thousand, seven hundred nine".