3909687 has 16 divisors (see below), whose sum is σ = 5544960. Its totient is φ = 2443392.

The previous prime is 3909671. The next prime is 3909691. The reversal of 3909687 is 7869093.

It is a happy number.

It is not a de Polignac number, because 3909687 - 2⁴ = 3909671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909617) 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, 6138 + ... + 6744.

It is an arithmetic number, because the mean of its divisors is an integer number (346560).

Almost surely, 2^3909687 is an apocalyptic number.

3909687 is a deficient number, since it is larger than the sum of its proper divisors (1635273).

3909687 is a wasteful number, since it uses less digits than its factorization.

3909687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 3909687 is about 1977.2928462926. The cubic root of 3909687 is about 157.5363080819.

The spelling of 3909687 in words is "three million, nine hundred nine thousand, six hundred eighty-seven".