491627417 has 4 divisors (see below), whose sum is σ = 500903460. Its totient is φ = 482351376.

The previous prime is 491627371. The next prime is 491627429. The reversal of 491627417 is 714726194.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313431616 + 178195801 = 17704^2 + 13349^2 .

It is a cyclic number.

It is not a de Polignac number, because 491627417 - 2²² = 487433113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491620417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4637942 + ... + 4638047.

It is an arithmetic number, because the mean of its divisors is an integer number (125225865).

Almost surely, 2^491627417 is an apocalyptic number.

It is an amenable number.

491627417 is a deficient number, since it is larger than the sum of its proper divisors (9276043).

491627417 is an equidigital number, since it uses as much as digits as its factorization.

491627417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9276042.

The product of its digits is 84672, while the sum is 41.

The square root of 491627417 is about 22172.6727527378. The cubic root of 491627417 is about 789.2453494209.

The spelling of 491627417 in words is "four hundred ninety-one million, six hundred twenty-seven thousand, four hundred seventeen".