3964687 has 4 divisors (see below), whose sum is σ = 3974976. Its totient is φ = 3954400.

The previous prime is 3964679. The next prime is 3964693. The reversal of 3964687 is 7864693.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7864693 = 17 ⋅462629.

It is a cyclic number.

It is not a de Polignac number, because 3964687 - 2³ = 3964679 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4543 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (993744).

Almost surely, 2^3964687 is an apocalyptic number.

3964687 is a deficient number, since it is larger than the sum of its proper divisors (10289).

3964687 is an equidigital number, since it uses as much as digits as its factorization.

3964687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288.

The product of its digits is 217728, while the sum is 43.

The square root of 3964687 is about 1991.1521790160. The cubic root of 3964687 is about 158.2715913162.

The spelling of 3964687 in words is "three million, nine hundred sixty-four thousand, six hundred eighty-seven".