823056889 has 8 divisors (see below), whose sum is σ = 827528832. Its totient is φ = 818593440.

The previous prime is 823056881. The next prime is 823056893. The reversal of 823056889 is 988650328.

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 823056889 - 2³ = 823056881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823056881) 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, 302244 + ... + 304954.

It is an arithmetic number, because the mean of its divisors is an integer number (103441104).

Almost surely, 2^823056889 is an apocalyptic number.

It is an amenable number.

823056889 is a deficient number, since it is larger than the sum of its proper divisors (4471943).

823056889 is a wasteful number, since it uses less digits than its factorization.

823056889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 823056889 is about 28688.9680713685. The cubic root of 823056889 is about 937.1518167527.

The spelling of 823056889 in words is "eight hundred twenty-three million, fifty-six thousand, eight hundred eighty-nine".