8390287 has 2 divisors, whose sum is σ = 8390288. Its totient is φ = 8390286.

The previous prime is 8390273. The next prime is 8390303. The reversal of 8390287 is 7820938.

8390287 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8390287 - 2¹¹ = 8388239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8390227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4195143 + 4195144.

It is an arithmetic number, because the mean of its divisors is an integer number (4195144).

Almost surely, 2^8390287 is an apocalyptic number.

8390287 is a deficient number, since it is larger than the sum of its proper divisors (1).

8390287 is an equidigital number, since it uses as much as digits as its factorization.

8390287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 8390287 is about 2896.5992128702. The cubic root of 8390287 is about 203.2008898916.

Subtracting from 8390287 its product of nonzero digits (24192), we obtain a triangular number (8366095 = T₄₀₉₀).

The spelling of 8390287 in words is "eight million, three hundred ninety thousand, two hundred eighty-seven".