417491 has 2 divisors, whose sum is σ = 417492. Its totient is φ = 417490.

The previous prime is 417479. The next prime is 417493. The reversal of 417491 is 194714.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-417491 is a prime.

It is a Sophie Germain prime.

Together with 417493, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 417491.

It is not a weakly prime, because it can be changed into another prime (417493) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208745 + 208746.

It is an arithmetic number, because the mean of its divisors is an integer number (208746).

2⁴¹⁷⁴⁹¹ is an apocalyptic number.

417491 is a deficient number, since it is larger than the sum of its proper divisors (1).

417491 is an equidigital number, since it uses as much as digits as its factorization.

417491 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 417491 is about 646.1354347194. The cubic root of 417491 is about 74.7393022800.

The spelling of 417491 in words is "four hundred seventeen thousand, four hundred ninety-one".