8381387 has 8 divisors (see below), whose sum is σ = 9615072. Its totient is φ = 7156800.

The previous prime is 8381371. The next prime is 8381393. The reversal of 8381387 is 7831838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8381387 - 2⁴ = 8381371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8381387.

It is not an unprimeable number, because it can be changed into a prime (8381887) 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 7 ways as a sum of consecutive naturals, for example, 164 + ... + 4097.

It is an arithmetic number, because the mean of its divisors is an integer number (1201884).

Almost surely, 2^8381387 is an apocalyptic number.

8381387 is a deficient number, since it is larger than the sum of its proper divisors (1233685).

8381387 is a wasteful number, since it uses less digits than its factorization.

8381387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its digits is 32256, while the sum is 38.

The square root of 8381387 is about 2895.0625209138. The cubic root of 8381387 is about 203.1290159995.

The spelling of 8381387 in words is "eight million, three hundred eighty-one thousand, three hundred eighty-seven".