494189 has 4 divisors (see below), whose sum is σ = 511260. Its totient is φ = 477120.

The previous prime is 494167. The next prime is 494191. The reversal of 494189 is 981494.

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

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 128164 = 605^2 + 358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494189 is a prime.

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 (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 3 ways as a sum of consecutive naturals, for example, 8492 + ... + 8549.

It is an arithmetic number, because the mean of its divisors is an integer number (127815).

2⁴⁹⁴¹⁸⁹ is an apocalyptic number.

It is an amenable number.

494189 is a deficient number, since it is larger than the sum of its proper divisors (17071).

494189 is a wasteful number, since it uses less digits than its factorization.

494189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070.

The product of its digits is 10368, while the sum is 35.

The square root of 494189 is about 702.9857751050. The cubic root of 494189 is about 79.0613740876.

The spelling of 494189 in words is "four hundred ninety-four thousand, one hundred eighty-nine".