823599396 has 18 divisors (see below), whose sum is σ = 2081876342. Its totient is φ = 274533120.

The previous prime is 823599379. The next prime is 823599397. The reversal of 823599396 is 693995328.

It can be written as a sum of positive squares in only one way, i.e., 776402496 + 47196900 = 27864^2 + 6870^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (823599397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11438845 + ... + 11438916.

Almost surely, 2^823599396 is an apocalyptic number.

It is an amenable number.

823599396 is an abundant number, since it is smaller than the sum of its proper divisors (1258276946).

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

823599396 is a wasteful number, since it uses less digits than its factorization.

823599396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22877771 (or 22877766 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 823599396 is about 28698.4214896917. The cubic root of 823599396 is about 937.3576752477.

The spelling of 823599396 in words is "eight hundred twenty-three million, five hundred ninety-nine thousand, three hundred ninety-six".