8147389 has 4 divisors (see below), whose sum is σ = 8410240. Its totient is φ = 7884540.

The previous prime is 8147387. The next prime is 8147393. The reversal of 8147389 is 9837418.

8147389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9837418 = 2 ⋅4918709.

It is not a de Polignac number, because 8147389 - 2¹ = 8147387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131379 + ... + 131440.

It is an arithmetic number, because the mean of its divisors is an integer number (2102560).

Almost surely, 2^8147389 is an apocalyptic number.

It is an amenable number.

8147389 is a deficient number, since it is larger than the sum of its proper divisors (262851).

8147389 is a wasteful number, since it uses less digits than its factorization.

8147389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262850.

The product of its digits is 48384, while the sum is 40.

The square root of 8147389 is about 2854.3631513877. The cubic root of 8147389 is about 201.2207750472.

The spelling of 8147389 in words is "eight million, one hundred forty-seven thousand, three hundred eighty-nine".