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491417 is a prime number
BaseRepresentation
bin1110111111110011001
3220222002122
41313332121
5111211132
614311025
74114463
oct1677631
9828078
10491417
11306233
121b8475
131428a4
14cb133
159a912
hex77f99

491417 has 2 divisors, whose sum is σ = 491418. Its totient is φ = 491416.

The previous prime is 491377. The next prime is 491423. The reversal of 491417 is 714194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491401 + 16 = 701^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 491417 - 26 = 491353 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491417.

It is not a weakly prime, because it can be changed into another prime (491497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245708 + 245709.

It is an arithmetic number, because the mean of its divisors is an integer number (245709).

2491417 is an apocalyptic number.

It is an amenable number.

491417 is a deficient number, since it is larger than the sum of its proper divisors (1).

491417 is an equidigital number, since it uses as much as digits as its factorization.

491417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 491417 is about 701.0114121753. The cubic root of 491417 is about 78.9132734101.

It can be divided in two parts, 4914 and 17, that multiplied together give a palindrome (83538).

The spelling of 491417 in words is "four hundred ninety-one thousand, four hundred seventeen".