8390489 has 8 divisors (see below), whose sum is σ = 8576832. Its totient is φ = 8205840.

The previous prime is 8390479. The next prime is 8390497. The reversal of 8390489 is 9840938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8390489 - 2⁸ = 8390233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8390479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15782 + ... + 16304.

It is an arithmetic number, because the mean of its divisors is an integer number (1072104).

Almost surely, 2^8390489 is an apocalyptic number.

It is an amenable number.

8390489 is a deficient number, since it is larger than the sum of its proper divisors (186343).

8390489 is a wasteful number, since it uses less digits than its factorization.

8390489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 8390489 is about 2896.6340811362. The cubic root of 8390489 is about 203.2025205967.

The spelling of 8390489 in words is "eight million, three hundred ninety thousand, four hundred eighty-nine".