811328399 has 8 divisors (see below), whose sum is σ = 944727840. Its totient is φ = 682302816.

The previous prime is 811328387. The next prime is 811328407. The reversal of 811328399 is 993823118.

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 811328399 - 2⁸ = 811328143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811328359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093064 + ... + 1093805.

It is an arithmetic number, because the mean of its divisors is an integer number (118090980).

Almost surely, 2^811328399 is an apocalyptic number.

811328399 is a deficient number, since it is larger than the sum of its proper divisors (133399441).

811328399 is a wasteful number, since it uses less digits than its factorization.

811328399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186929.

The product of its digits is 93312, while the sum is 44.

The square root of 811328399 is about 28483.8269725120. The cubic root of 811328399 is about 932.6790592137.

The spelling of 811328399 in words is "eight hundred eleven million, three hundred twenty-eight thousand, three hundred ninety-nine".