494689 has 4 divisors (see below), whose sum is σ = 532756. Its totient is φ = 456624.

The previous prime is 494687. The next prime is 494693. The reversal of 494689 is 986494.

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 134689 + 360000 = 367^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 494689 - 2¹ = 494687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19014 + ... + 19039.

It is an arithmetic number, because the mean of its divisors is an integer number (133189).

2⁴⁹⁴⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

494689 is a deficient number, since it is larger than the sum of its proper divisors (38067).

494689 is a wasteful number, since it uses less digits than its factorization.

494689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38066.

The product of its digits is 62208, while the sum is 40.

The square root of 494689 is about 703.3413111712. The cubic root of 494689 is about 79.0880287769.

The spelling of 494689 in words is "four hundred ninety-four thousand, six hundred eighty-nine".