489139 has 4 divisors (see below), whose sum is σ = 559024. Its totient is φ = 419256.

The previous prime is 489133. The next prime is 489157. The reversal of 489139 is 931984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489139 - 2⁷ = 489011 is a prime.

It is a super-2 number, since 2×489139² = 478513922642, which contains 22 as substring.

It is a Duffinian number.

489139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (489133) 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 3 ways as a sum of consecutive naturals, for example, 34932 + ... + 34945.

It is an arithmetic number, because the mean of its divisors is an integer number (139756).

2⁴⁸⁹¹³⁹ is an apocalyptic number.

489139 is a deficient number, since it is larger than the sum of its proper divisors (69885).

489139 is an equidigital number, since it uses as much as digits as its factorization.

489139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69884.

The product of its digits is 7776, while the sum is 34.

The square root of 489139 is about 699.3847296017. The cubic root of 489139 is about 78.7911483955.

The spelling of 489139 in words is "four hundred eighty-nine thousand, one hundred thirty-nine".