494391996 has 36 divisors (see below), whose sum is σ = 1428244272. Its totient is φ = 141254784.

The previous prime is 494391967. The next prime is 494392001. The reversal of 494391996 is 699193494.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 980685 + ... + 981188.

It is an arithmetic number, because the mean of its divisors is an integer number (39673452).

Almost surely, 2^494391996 is an apocalyptic number.

It is an amenable number.

494391996 is an abundant number, since it is smaller than the sum of its proper divisors (933852276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494391996 is a wasteful number, since it uses less digits than its factorization.

494391996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961890 (or 1961885 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 494391996 is about 22234.9273891326. The cubic root of 494391996 is about 790.7219784513.

The spelling of 494391996 in words is "four hundred ninety-four million, three hundred ninety-one thousand, nine hundred ninety-six".