4381989 has 16 divisors (see below), whose sum is σ = 6259200. Its totient is φ = 2718576.

The previous prime is 4381973. The next prime is 4381997. The reversal of 4381989 is 9891834.

It is not a de Polignac number, because 4381989 - 2⁴ = 4381973 is a prime.

It is a super-2 number, since 2×4381989² = 38403655192242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4381989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2712 + ... + 4014.

It is an arithmetic number, because the mean of its divisors is an integer number (391200).

Almost surely, 2^4381989 is an apocalyptic number.

It is an amenable number.

4381989 is a deficient number, since it is larger than the sum of its proper divisors (1877211).

4381989 is a wasteful number, since it uses less digits than its factorization.

4381989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its digits is 62208, while the sum is 42.

The square root of 4381989 is about 2093.3200901917. The cubic root of 4381989 is about 163.6403605365.

The spelling of 4381989 in words is "four million, three hundred eighty-one thousand, nine hundred eighty-nine".