8138289 has 16 divisors (see below), whose sum is σ = 11598080. Its totient is φ = 5060880.

The previous prime is 8138279. The next prime is 8138323. The reversal of 8138289 is 9828318.

8138289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8138289 - 2¹² = 8134193 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8138209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2754 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (724880).

Almost surely, 2^8138289 is an apocalyptic number.

It is an amenable number.

8138289 is a deficient number, since it is larger than the sum of its proper divisors (3459791).

8138289 is a wasteful number, since it uses less digits than its factorization.

8138289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220.

The product of its digits is 27648, while the sum is 39.

The square root of 8138289 is about 2852.7686551839. The cubic root of 8138289 is about 201.1458311516.

The spelling of 8138289 in words is "eight million, one hundred thirty-eight thousand, two hundred eighty-nine".