490389 has 8 divisors (see below), whose sum is σ = 675072. Its totient is φ = 316320.

The previous prime is 490367. The next prime is 490393. The reversal of 490389 is 983094.

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

It is not a de Polignac number, because 490389 - 2¹² = 486293 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 490389.

It is not an unprimeable number, because it can be changed into a prime (490309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2544 + ... + 2729.

It is an arithmetic number, because the mean of its divisors is an integer number (84384).

2⁴⁹⁰³⁸⁹ is an apocalyptic number.

It is an amenable number.

490389 is a deficient number, since it is larger than the sum of its proper divisors (184683).

490389 is a wasteful number, since it uses less digits than its factorization.

490389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5307.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 490389 is about 700.2778020186. The cubic root of 490389 is about 78.8582085140.

The spelling of 490389 in words is "four hundred ninety thousand, three hundred eighty-nine".