868117387 has 4 divisors (see below), whose sum is σ = 880009480. Its totient is φ = 856225296.

The previous prime is 868117381. The next prime is 868117399. The reversal of 868117387 is 783711868.

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

It is a cyclic number.

It is not a de Polignac number, because 868117387 - 2⁷ = 868117259 is a prime.

It is a super-2 number, since 2×868117387² = 1507255595223415538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 868117387.

It is not an unprimeable number, because it can be changed into a prime (868117381) 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 3 ways as a sum of consecutive naturals, for example, 5945937 + ... + 5946082.

It is an arithmetic number, because the mean of its divisors is an integer number (220002370).

Almost surely, 2^868117387 is an apocalyptic number.

868117387 is a deficient number, since it is larger than the sum of its proper divisors (11892093).

868117387 is a wasteful number, since it uses less digits than its factorization.

868117387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11892092.

The product of its digits is 451584, while the sum is 49.

The square root of 868117387 is about 29463.8318451623. The cubic root of 868117387 is about 953.9511843106.

The spelling of 868117387 in words is "eight hundred sixty-eight million, one hundred seventeen thousand, three hundred eighty-seven".