823832989 has 16 divisors (see below), whose sum is σ = 1007884800. Its totient is φ = 657632304.

The previous prime is 823832987. The next prime is 823832993. The reversal of 823832989 is 989238328.

823832989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 823832989 - 2¹ = 823832987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823832981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44647 + ... + 60340.

It is an arithmetic number, because the mean of its divisors is an integer number (62992800).

Almost surely, 2^823832989 is an apocalyptic number.

It is an amenable number.

823832989 is a deficient number, since it is larger than the sum of its proper divisors (184051811).

823832989 is a wasteful number, since it uses less digits than its factorization.

823832989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105072.

The product of its digits is 1492992, while the sum is 52.

The square root of 823832989 is about 28702.4909894594. The cubic root of 823832989 is about 937.4462860840.

The spelling of 823832989 in words is "eight hundred twenty-three million, eight hundred thirty-two thousand, nine hundred eighty-nine".