490789 has 8 divisors (see below), whose sum is σ = 556640. Its totient is φ = 428976.

The previous prime is 490783. The next prime is 490829. The reversal of 490789 is 987094.

It is a happy number.

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 490789 - 2⁷ = 490661 is a prime.

It is an Ulam number.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490783) 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, 747 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (69580).

2⁴⁹⁰⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

490789 is a deficient number, since it is larger than the sum of its proper divisors (65851).

490789 is a wasteful number, since it uses less digits than its factorization.

490789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 490789 is about 700.5633447448. The cubic root of 490789 is about 78.8796436814.

The spelling of 490789 in words is "four hundred ninety thousand, seven hundred eighty-nine".