8381889 has 12 divisors (see below), whose sum is σ = 12228372. Its totient is φ = 5532000.

The previous prime is 8381887. The next prime is 8381903. The reversal of 8381889 is 9881838.

8381889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7884864 + 497025 = 2808^2 + 705^2 .

It is not a de Polignac number, because 8381889 - 2¹ = 8381887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8381881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3702 + ... + 5519.

It is an arithmetic number, because the mean of its divisors is an integer number (1019031).

Almost surely, 2^8381889 is an apocalyptic number.

It is an amenable number.

8381889 is a deficient number, since it is larger than the sum of its proper divisors (3846483).

8381889 is a wasteful number, since it uses less digits than its factorization.

8381889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328 (or 9325 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 8381889 is about 2895.1492189523. The cubic root of 8381889 is about 203.1330713637.

The spelling of 8381889 in words is "eight million, three hundred eighty-one thousand, eight hundred eighty-nine".