3887887 has 4 divisors (see below), whose sum is σ = 3970656. Its totient is φ = 3805120.

The previous prime is 3887881. The next prime is 3887893. The reversal of 3887887 is 7887883.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3887881) and next prime (3887893).

It is a de Polignac number, because none of the positive numbers 2^k-3887887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3887887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887881) 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 3 ways as a sum of consecutive naturals, for example, 41314 + ... + 41407.

It is an arithmetic number, because the mean of its divisors is an integer number (992664).

Almost surely, 2^3887887 is an apocalyptic number.

3887887 is a deficient number, since it is larger than the sum of its proper divisors (82769).

3887887 is an equidigital number, since it uses as much as digits as its factorization.

3887887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82768.

The product of its digits is 602112, while the sum is 49.

The square root of 3887887 is about 1971.7725528062. The cubic root of 3887887 is about 157.2429602644.

It can be divided in two parts, 3887 and 887, that added together give a palindrome (4774).

The spelling of 3887887 in words is "three million, eight hundred eighty-seven thousand, eight hundred eighty-seven".