869489712 has 180 divisors, whose sum is σ = 3048711120. Its totient is φ = 229291776.

The previous prime is 869489689. The next prime is 869489717. The reversal of 869489712 is 217984968.

869489712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (869489717) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 86989 + ... + 96467.

It is an arithmetic number, because the mean of its divisors is an integer number (16937284).

Almost surely, 2^869489712 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 869489712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524355560).

869489712 is an abundant number, since it is smaller than the sum of its proper divisors (2179221408).

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

869489712 is a wasteful number, since it uses less digits than its factorization.

869489712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520 (or 9504 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 869489712 is about 29487.1109469883. The cubic root of 869489712 is about 954.4535901897.

The spelling of 869489712 in words is "eight hundred sixty-nine million, four hundred eighty-nine thousand, seven hundred twelve".