494878 has 4 divisors (see below), whose sum is σ = 742320. Its totient is φ = 247438.

The previous prime is 494873. The next prime is 494899. The reversal of 494878 is 878494.

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

It is a self number, because there is not a number n which added to its sum of digits gives 494878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494873) 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 as a sum of consecutive naturals, namely, 123718 + ... + 123721.

It is an arithmetic number, because the mean of its divisors is an integer number (185580).

2⁴⁹⁴⁸⁷⁸ is an apocalyptic number.

494878 is a deficient number, since it is larger than the sum of its proper divisors (247442).

494878 is a wasteful number, since it uses less digits than its factorization.

494878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247441.

The product of its digits is 64512, while the sum is 40.

The square root of 494878 is about 703.4756570060. The cubic root of 494878 is about 79.0980995717.

The spelling of 494878 in words is "four hundred ninety-four thousand, eight hundred seventy-eight".