489819 has 8 divisors (see below), whose sum is σ = 712512. Its totient is φ = 296840.

The previous prime is 489817. The next prime is 489823. The reversal of 489819 is 918984.

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 489819 - 2¹ = 489817 is a prime.

It is a super-2 number, since 2×489819² = 479845305522, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (489817) 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, 7389 + ... + 7454.

It is an arithmetic number, because the mean of its divisors is an integer number (89064).

2⁴⁸⁹⁸¹⁹ is an apocalyptic number.

489819 is a deficient number, since it is larger than the sum of its proper divisors (222693).

489819 is a wasteful number, since it uses less digits than its factorization.

489819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14857.

The product of its digits is 20736, while the sum is 39.

The square root of 489819 is about 699.8707023444. The cubic root of 489819 is about 78.8276432515.

Adding to 489819 its product of digits (20736), we get a triangular number (510555 = T₁₀₁₀).

The spelling of 489819 in words is "four hundred eighty-nine thousand, eight hundred nineteen".