847868749 has 32 divisors (see below), whose sum is σ = 1108961280. Its totient is φ = 629456832.

The previous prime is 847868743. The next prime is 847868759. The reversal of 847868749 is 947868748.

847868749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 847868749 - 2⁵ = 847868717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847868743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182712 + ... + 187294.

It is an arithmetic number, because the mean of its divisors is an integer number (34655040).

Almost surely, 2^847868749 is an apocalyptic number.

It is an amenable number.

847868749 is a deficient number, since it is larger than the sum of its proper divisors (261092531).

847868749 is a wasteful number, since it uses less digits than its factorization.

847868749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729.

The product of its digits is 21676032, while the sum is 61.

The square root of 847868749 is about 29118.1858809920. The cubic root of 847868749 is about 946.4758622566.

Subtracting 847868749 from its reverse (947868748), we obtain a palindrome (99999999).

The spelling of 847868749 in words is "eight hundred forty-seven million, eight hundred sixty-eight thousand, seven hundred forty-nine".