4443987 has 16 divisors (see below), whose sum is σ = 6359040. Its totient is φ = 2750592.

The previous prime is 4443983. The next prime is 4444001. The reversal of 4443987 is 7893444.

It is not a de Polignac number, because 4443987 - 2² = 4443983 is a prime.

It is a d-powerful number, because it can be written as 4² + 4⁷ + 4¹¹ + 3¹¹ + 9⁴ + 8⁵ + 7⁵ .

It is not an unprimeable number, because it can be changed into a prime (4443983) 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, 3478 + ... + 4580.

It is an arithmetic number, because the mean of its divisors is an integer number (397440).

Almost surely, 2^4443987 is an apocalyptic number.

4443987 is a deficient number, since it is larger than the sum of its proper divisors (1915053).

4443987 is a wasteful number, since it uses less digits than its factorization.

4443987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202.

The product of its digits is 96768, while the sum is 39.

The square root of 4443987 is about 2108.0766115111. The cubic root of 4443987 is about 164.4084973201.

It can be divided in two parts, 4443 and 987, that multiplied together give a triangular number (4385241 = T₂₉₆₁).

The spelling of 4443987 in words is "four million, four hundred forty-three thousand, nine hundred eighty-seven".