6390489 has 16 divisors (see below), whose sum is σ = 9827712. Its totient is φ = 3618048.

The previous prime is 6390463. The next prime is 6390499. The reversal of 6390489 is 9840936.

It is not a de Polignac number, because 6390489 - 2¹¹ = 6388441 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6390409) 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, 1027 + ... + 3719.

It is an arithmetic number, because the mean of its divisors is an integer number (614232).

Almost surely, 2^6390489 is an apocalyptic number.

It is an amenable number.

6390489 is a deficient number, since it is larger than the sum of its proper divisors (3437223).

6390489 is a wasteful number, since it uses less digits than its factorization.

6390489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 6390489 is about 2527.9416528077. The cubic root of 6390489 is about 185.5715365989.

The spelling of 6390489 in words is "six million, three hundred ninety thousand, four hundred eighty-nine".