494857 has 4 divisors (see below), whose sum is σ = 539856. Its totient is φ = 449860.

The previous prime is 494849. The next prime is 494873. The reversal of 494857 is 758494.

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.

It is a cyclic number.

It is not a de Polignac number, because 494857 - 2³ = 494849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494257) 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, 22483 + ... + 22504.

It is an arithmetic number, because the mean of its divisors is an integer number (134964).

2⁴⁹⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

494857 is a deficient number, since it is larger than the sum of its proper divisors (44999).

494857 is a wasteful number, since it uses less digits than its factorization.

494857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44998.

The product of its digits is 40320, while the sum is 37.

The square root of 494857 is about 703.4607309580. The cubic root of 494857 is about 79.0969807211.

It can be divided in two parts, 4948 and 57, that added together give a palindrome (5005).

The spelling of 494857 in words is "four hundred ninety-four thousand, eight hundred fifty-seven".