864492017 has 2 divisors, whose sum is σ = 864492018. Its totient is φ = 864492016.

The previous prime is 864491989. The next prime is 864492049. The reversal of 864492017 is 710294468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796989361 + 67502656 = 28231^2 + 8216^2 .

It is a cyclic number.

It is not a de Polignac number, because 864492017 - 2¹⁰ = 864490993 is a prime.

It is not a weakly prime, because it can be changed into another prime (864492617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432246008 + 432246009.

It is an arithmetic number, because the mean of its divisors is an integer number (432246009).

Almost surely, 2^864492017 is an apocalyptic number.

It is an amenable number.

864492017 is a deficient number, since it is larger than the sum of its proper divisors (1).

864492017 is an equidigital number, since it uses as much as digits as its factorization.

864492017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 864492017 is about 29402.2451013524. The cubic root of 864492017 is about 952.6213904620.

The spelling of 864492017 in words is "eight hundred sixty-four million, four hundred ninety-two thousand, seventeen".