3887439 has 4 divisors (see below), whose sum is σ = 5183256. Its totient is φ = 2591624.

The previous prime is 3887399. The next prime is 3887449. The reversal of 3887439 is 9347883.

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

It is a cyclic number.

It is not a de Polignac number, because 3887439 - 2⁷ = 3887311 is a prime.

It is a super-2 number, since 2×3887439² = 30224363957442, which contains 22 as substring.

It is a D-number.

3887439 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3887439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887449) 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, 647904 + ... + 647909.

It is an arithmetic number, because the mean of its divisors is an integer number (1295814).

Almost surely, 2^3887439 is an apocalyptic number.

3887439 is a deficient number, since it is larger than the sum of its proper divisors (1295817).

3887439 is a wasteful number, since it uses less digits than its factorization.

3887439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295816.

The product of its digits is 145152, while the sum is 42.

The square root of 3887439 is about 1971.6589461669. The cubic root of 3887439 is about 157.2369203468.

The spelling of 3887439 in words is "three million, eight hundred eighty-seven thousand, four hundred thirty-nine".