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491394 = 2381899
BaseRepresentation
bin1110111111110000010
3220222001210
41313332002
5111211034
614310550
74114431
oct1677602
9828053
10491394
11306212
121b8456
13142887
14cb118
159a8e9
hex77f82

491394 has 8 divisors (see below), whose sum is σ = 982800. Its totient is φ = 163796.

The previous prime is 491377. The next prime is 491417. The reversal of 491394 is 493194.

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

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.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40944 + ... + 40955.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

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 product of its digits is 3888, while the sum is 30.

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".

Divisors: 1 2 3 6 81899 163798 245697 491394