3946887 has 20 divisors (see below), whose sum is σ = 6739216. Its totient is φ = 2255040.

The previous prime is 3946879. The next prime is 3946913. The reversal of 3946887 is 7886493.

It is a happy number.

It is not a de Polignac number, because 3946887 - 2³ = 3946879 is a prime.

It is an Ulam number.

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 (3946837) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2914 + ... + 4047.

Almost surely, 2^3946887 is an apocalyptic number.

3946887 is a deficient number, since it is larger than the sum of its proper divisors (2792329).

3946887 is an equidigital number, since it uses as much as digits as its factorization.

3946887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980 (or 6971 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3946887 is about 1986.6773769286. The cubic root of 3946887 is about 158.0343753652.

The spelling of 3946887 in words is "three million, nine hundred forty-six thousand, eight hundred eighty-seven".