869634784 has 36 divisors (see below), whose sum is σ = 1788177384. Its totient is φ = 415529664.

The previous prime is 869634781. The next prime is 869634793. The reversal of 869634784 is 487436968.

869634784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869634781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 799489 + ... + 800575.

It is an arithmetic number, because the mean of its divisors is an integer number (49671594).

Almost surely, 2^869634784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869634784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894088692).

869634784 is an abundant number, since it is smaller than the sum of its proper divisors (918542600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869634784 is an equidigital number, since it uses as much as digits as its factorization.

869634784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207 (or 1112 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

The square root of 869634784 is about 29489.5707666287. The cubic root of 869634784 is about 954.5066699019.

It can be divided in two parts, 8696 and 34784, that multiplied together give a square (302481664 = 17392²).

The spelling of 869634784 in words is "eight hundred sixty-nine million, six hundred thirty-four thousand, seven hundred eighty-four".