868347947 has 8 divisors (see below), whose sum is σ = 922068000. Its totient is φ = 814921344.

The previous prime is 868347929. The next prime is 868347967. The reversal of 868347947 is 749743868.

868347947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868347947 - 2⁸ = 868347691 is a prime.

It is a super-2 number, since 2×868347947² = 1508056314118229618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 868347892 and 868347901.

It is not an unprimeable number, because it can be changed into a prime (868347967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67247 + ... + 79112.

It is an arithmetic number, because the mean of its divisors is an integer number (115258500).

Almost surely, 2^868347947 is an apocalyptic number.

868347947 is a deficient number, since it is larger than the sum of its proper divisors (53720053).

868347947 is a wasteful number, since it uses less digits than its factorization.

868347947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146725.

The product of its digits is 8128512, while the sum is 56.

The square root of 868347947 is about 29467.7441790172. The cubic root of 868347947 is about 954.0356289260.

The spelling of 868347947 in words is "eight hundred sixty-eight million, three hundred forty-seven thousand, nine hundred forty-seven".