864837117 has 12 divisors (see below), whose sum is σ = 1314957280. Its totient is φ = 546212808.

The previous prime is 864837109. The next prime is 864837121. The reversal of 864837117 is 711738468.

It is not a de Polignac number, because 864837117 - 2³ = 864837109 is a prime.

It is a super-3 number, since 3×864837117³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864837137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2528593 + ... + 2528934.

Almost surely, 2^864837117 is an apocalyptic number.

It is an amenable number.

864837117 is a deficient number, since it is larger than the sum of its proper divisors (450120163).

864837117 is a wasteful number, since it uses less digits than its factorization.

864837117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057552 (or 5057549 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 864837117 is about 29408.1131152612. The cubic root of 864837117 is about 952.7481338366.

The spelling of 864837117 in words is "eight hundred sixty-four million, eight hundred thirty-seven thousand, one hundred seventeen".