8381899 has 4 divisors (see below), whose sum is σ = 8670960. Its totient is φ = 8092840.

The previous prime is 8381887. The next prime is 8381903. The reversal of 8381899 is 9981838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9981838 = 2 ⋅4990919.

It is a cyclic number.

It is not a de Polignac number, because 8381899 - 2¹¹ = 8379851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8381809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144487 + ... + 144544.

It is an arithmetic number, because the mean of its divisors is an integer number (2167740).

Almost surely, 2^8381899 is an apocalyptic number.

8381899 is a deficient number, since it is larger than the sum of its proper divisors (289061).

8381899 is a wasteful number, since it uses less digits than its factorization.

8381899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289060.

The product of its digits is 124416, while the sum is 46.

The square root of 8381899 is about 2895.1509459785. The cubic root of 8381899 is about 203.1331521462.

The spelling of 8381899 in words is "eight million, three hundred eighty-one thousand, eight hundred ninety-nine".