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491963 = 1743673
BaseRepresentation
bin1111000000110111011
3220222211212
41320012323
5111220323
614313335
74116203
oct1700673
9828755
10491963
1130668a
121b884b
13142c04
14cb403
159ab78
hex781bb

491963 has 8 divisors (see below), whose sum is σ = 533808. Its totient is φ = 451584.

The previous prime is 491951. The next prime is 491969. The reversal of 491963 is 369194.

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

It is a cyclic number.

It is not a de Polignac number, because 491963 - 26 = 491899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491969) 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 in 7 ways as a sum of consecutive naturals, for example, 395 + ... + 1067.

It is an arithmetic number, because the mean of its divisors is an integer number (66726).

2491963 is an apocalyptic number.

491963 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

491963 is a deficient number, since it is larger than the sum of its proper divisors (41845).

491963 is a wasteful number, since it uses less digits than its factorization.

491963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its digits is 5832, while the sum is 32.

The square root of 491963 is about 701.4007413740. The cubic root of 491963 is about 78.9424887198.

The spelling of 491963 in words is "four hundred ninety-one thousand, nine hundred sixty-three".

Divisors: 1 17 43 673 731 11441 28939 491963