It is a sphenic number, since it is the product of 3 distinct primes.
491394 is an admirable number.
It is a Curzon number.
It is an unprimeable number.
491394 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2491394 is an apocalyptic number.
491394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
491394 is a wasteful number, since it uses less digits than its factorization.
491394 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 81904.
The square root of 491394 is about 700.9950071149. The cubic root of 491394 is about 78.9120422536.
The spelling of 491394 in words is "four hundred ninety-one thousand, three hundred ninety-four".