494139 has 8 divisors (see below), whose sum is σ = 697680. Its totient is φ = 310016.

The previous prime is 494129. The next prime is 494141. The reversal of 494139 is 931494.

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 494139 - 2⁵ = 494107 is a prime.

494139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (494129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4794 + ... + 4895.

It is an arithmetic number, because the mean of its divisors is an integer number (87210).

2⁴⁹⁴¹³⁹ is an apocalyptic number.

494139 is a deficient number, since it is larger than the sum of its proper divisors (203541).

494139 is a wasteful number, since it uses less digits than its factorization.

494139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9709.

The product of its digits is 3888, while the sum is 30.

The square root of 494139 is about 702.9502116082. The cubic root of 494139 is about 79.0587076300.

The spelling of 494139 in words is "four hundred ninety-four thousand, one hundred thirty-nine".