823939329 has 8 divisors (see below), whose sum is σ = 1136468160. Its totient is φ = 530351696.

The previous prime is 823939283. The next prime is 823939339. The reversal of 823939329 is 923939328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 823939329 - 2¹⁶ = 823873793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823939339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4735197 + ... + 4735370.

It is an arithmetic number, because the mean of its divisors is an integer number (142058520).

Almost surely, 2^823939329 is an apocalyptic number.

It is an amenable number.

823939329 is a deficient number, since it is larger than the sum of its proper divisors (312528831).

823939329 is a wasteful number, since it uses less digits than its factorization.

823939329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470599.

The product of its digits is 629856, while the sum is 48.

The square root of 823939329 is about 28704.3433821434. The cubic root of 823939329 is about 937.4866194001.

Subtracting 823939329 from its reverse (923939328), we obtain a palindrome (99999999).

The spelling of 823939329 in words is "eight hundred twenty-three million, nine hundred thirty-nine thousand, three hundred twenty-nine".