864193117 has 2 divisors, whose sum is σ = 864193118. Its totient is φ = 864193116.

The previous prime is 864193111. The next prime is 864193133. The reversal of 864193117 is 711391468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847333881 + 16859236 = 29109^2 + 4106^2 .

It is a cyclic number.

It is not a de Polignac number, because 864193117 - 2¹⁹ = 863668829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864193117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864193111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432096558 + 432096559.

It is an arithmetic number, because the mean of its divisors is an integer number (432096559).

Almost surely, 2^864193117 is an apocalyptic number.

It is an amenable number.

864193117 is a deficient number, since it is larger than the sum of its proper divisors (1).

864193117 is an equidigital number, since it uses as much as digits as its factorization.

864193117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 864193117 is about 29397.1617167372. The cubic root of 864193117 is about 952.5115874985.

The spelling of 864193117 in words is "eight hundred sixty-four million, one hundred ninety-three thousand, one hundred seventeen".