8390289 has 16 divisors (see below), whose sum is σ = 11540672. Its totient is φ = 5419008.

The previous prime is 8390287. The next prime is 8390303. The reversal of 8390289 is 9820938.

8390289 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 8390289 - 2¹ = 8390287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8390287) 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, 24729 + ... + 25065.

It is an arithmetic number, because the mean of its divisors is an integer number (721292).

Almost surely, 2^8390289 is an apocalyptic number.

It is an amenable number.

8390289 is a deficient number, since it is larger than the sum of its proper divisors (3150383).

8390289 is a wasteful number, since it uses less digits than its factorization.

8390289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 8390289 is about 2896.5995581026. The cubic root of 8390289 is about 203.2009060374.

The spelling of 8390289 in words is "eight million, three hundred ninety thousand, two hundred eighty-nine".