823328429 has 24 divisors (see below), whose sum is σ = 1046569248. Its totient is φ = 640479840.

The previous prime is 823328423. The next prime is 823328437. The reversal of 823328429 is 924823328.

It is a de Polignac number, because none of the positive numbers 2^k-823328429 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 (823328423) 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 23 ways as a sum of consecutive naturals, for example, 509627 + ... + 511239.

It is an arithmetic number, because the mean of its divisors is an integer number (43607052).

Almost surely, 2^823328429 is an apocalyptic number.

It is an amenable number.

823328429 is a deficient number, since it is larger than the sum of its proper divisors (223240819).

823328429 is a wasteful number, since it uses less digits than its factorization.

823328429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585 (or 2578 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 823328429 is about 28693.7001622307. The cubic root of 823328429 is about 937.2548660185.

The spelling of 823328429 in words is "eight hundred twenty-three million, three hundred twenty-eight thousand, four hundred twenty-nine".