494990 has 8 divisors (see below), whose sum is σ = 891000. Its totient is φ = 197992.

The previous prime is 494987. The next prime is 495017. The reversal of 494990 is 99494.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 494990.

It is a congruent number.

It is an unprimeable number.

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, 24740 + ... + 24759.

It is an arithmetic number, because the mean of its divisors is an integer number (111375).

2⁴⁹⁴⁹⁹⁰ is an apocalyptic number.

494990 is a deficient number, since it is larger than the sum of its proper divisors (396010).

494990 is a wasteful number, since it uses less digits than its factorization.

494990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49506.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 494990 is about 703.5552572471. Note that the first 3 decimals coincide. The cubic root of 494990 is about 79.1040662402.

The spelling of 494990 in words is "four hundred ninety-four thousand, nine hundred ninety".