868837947 has 16 divisors (see below), whose sum is σ = 1220060160. Its totient is φ = 548452512.

The previous prime is 868837933. The next prime is 868837951. The reversal of 868837947 is 749738868.

It is not a de Polignac number, because 868837947 - 2⁸ = 868837691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868817947) 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 15 ways as a sum of consecutive naturals, for example, 178113 + ... + 182925.

It is an arithmetic number, because the mean of its divisors is an integer number (76253760).

Almost surely, 2^868837947 is an apocalyptic number.

868837947 is a deficient number, since it is larger than the sum of its proper divisors (351222213).

868837947 is a wasteful number, since it uses less digits than its factorization.

868837947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002.

The product of its digits is 16257024, while the sum is 60.

The square root of 868837947 is about 29476.0571820588. The cubic root of 868837947 is about 954.2150460811.

It can be divided in two parts, 86883 and 7947, that added together give a triangular number (94830 = T₄₃₅).

The spelling of 868837947 in words is "eight hundred sixty-eight million, eight hundred thirty-seven thousand, nine hundred forty-seven".