494389 has 4 divisors (see below), whose sum is σ = 565024. Its totient is φ = 423756.

The previous prime is 494387. The next prime is 494407. The reversal of 494389 is 983494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983494 = 2 ⋅491747.

It is a cyclic number.

It is not a de Polignac number, because 494389 - 2¹ = 494387 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 (494381) 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, 35307 + ... + 35320.

It is an arithmetic number, because the mean of its divisors is an integer number (141256).

2⁴⁹⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

494389 is a deficient number, since it is larger than the sum of its proper divisors (70635).

494389 is an equidigital number, since it uses as much as digits as its factorization.

494389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70634.

The product of its digits is 31104, while the sum is 37.

The square root of 494389 is about 703.1280111047. The cubic root of 494389 is about 79.0720381198.

The spelling of 494389 in words is "four hundred ninety-four thousand, three hundred eighty-nine".