8145289 has 4 divisors (see below), whose sum is σ = 8499456. Its totient is φ = 7791124.

The previous prime is 8145283. The next prime is 8145299. The reversal of 8145289 is 9825418.

8145289 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: 9825418 = 2 ⋅4912709.

It is a cyclic number.

It is not a de Polignac number, because 8145289 - 2⁹ = 8144777 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 (8145283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177049 + ... + 177094.

It is an arithmetic number, because the mean of its divisors is an integer number (2124864).

Almost surely, 2^8145289 is an apocalyptic number.

It is an amenable number.

8145289 is a deficient number, since it is larger than the sum of its proper divisors (354167).

8145289 is a wasteful number, since it uses less digits than its factorization.

8145289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354166.

The product of its digits is 23040, while the sum is 37.

The square root of 8145289 is about 2853.9952697929. The cubic root of 8145289 is about 201.2034852570.

The spelling of 8145289 in words is "eight million, one hundred forty-five thousand, two hundred eighty-nine".