8139384 has 96 divisors (see below), whose sum is σ = 24710400. Its totient is φ = 2399040.

The previous prime is 8139377. The next prime is 8139403. The reversal of 8139384 is 4839318.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33937 + ... + 34175.

It is an arithmetic number, because the mean of its divisors is an integer number (257400).

Almost surely, 2^8139384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8139384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12355200).

8139384 is an abundant number, since it is smaller than the sum of its proper divisors (16571016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8139384 is a wasteful number, since it uses less digits than its factorization.

8139384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 298 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 8139384 is about 2852.9605675508. The cubic root of 8139384 is about 201.1548520816.

The spelling of 8139384 in words is "eight million, one hundred thirty-nine thousand, three hundred eighty-four".