868873747 has 4 divisors (see below), whose sum is σ = 992998576. Its totient is φ = 744748920.

The previous prime is 868873739. The next prime is 868873751. The reversal of 868873747 is 747378868.

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 868873747 - 2³ = 868873739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 868873691 and 868873700.

It is not an unprimeable number, because it can be changed into a prime (868873777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62062404 + ... + 62062417.

It is an arithmetic number, because the mean of its divisors is an integer number (248249644).

Almost surely, 2^868873747 is an apocalyptic number.

868873747 is a deficient number, since it is larger than the sum of its proper divisors (124124829).

868873747 is a wasteful number, since it uses less digits than its factorization.

868873747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124124828.

The product of its digits is 12644352, while the sum is 58.

The square root of 868873747 is about 29476.6644483395. The cubic root of 868873747 is about 954.2281518736.

The spelling of 868873747 in words is "eight hundred sixty-eight million, eight hundred seventy-three thousand, seven hundred forty-seven".