417971263 has 2 divisors, whose sum is σ = 417971264. Its totient is φ = 417971262.

The previous prime is 417971251. The next prime is 417971273. The reversal of 417971263 is 362179714.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-417971263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (417971273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208985631 + 208985632.

It is an arithmetic number, because the mean of its divisors is an integer number (208985632).

Almost surely, 2^417971263 is an apocalyptic number.

417971263 is a deficient number, since it is larger than the sum of its proper divisors (1).

417971263 is an equidigital number, since it uses as much as digits as its factorization.

417971263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 417971263 is about 20444.3455018741. The cubic root of 417971263 is about 747.6795021613.

The spelling of 417971263 in words is "four hundred seventeen million, nine hundred seventy-one thousand, two hundred sixty-three".