3887961 has 16 divisors (see below), whose sum is σ = 6463488. Its totient is φ = 2019600.

The previous prime is 3887959. The next prime is 3887963. The reversal of 3887961 is 1697883.

It is an interprime number because it is at equal distance from previous prime (3887959) and next prime (3887963).

It is not a de Polignac number, because 3887961 - 2¹ = 3887959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3887963) 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, 8185 + ... + 8646.

It is an arithmetic number, because the mean of its divisors is an integer number (403968).

Almost surely, 2^3887961 is an apocalyptic number.

It is an amenable number.

3887961 is a deficient number, since it is larger than the sum of its proper divisors (2575527).

3887961 is a wasteful number, since it uses less digits than its factorization.

3887961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16852.

The product of its digits is 72576, while the sum is 42.

The square root of 3887961 is about 1971.7913175587. The cubic root of 3887961 is about 157.2439578848.

The spelling of 3887961 in words is "three million, eight hundred eighty-seven thousand, nine hundred sixty-one".