823947043 has 12 divisors (see below), whose sum is σ = 876435040. Its totient is φ = 774004896.

The previous prime is 823947031. The next prime is 823947067. The reversal of 823947043 is 340749328.

823947043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 823947043 - 2¹³ = 823938851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823946987 and 823947005.

It is not an unprimeable number, because it can be changed into a prime (823947013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17878 + ... + 44356.

Almost surely, 2^823947043 is an apocalyptic number.

823947043 is a deficient number, since it is larger than the sum of its proper divisors (52487997).

823947043 is a wasteful number, since it uses less digits than its factorization.

823947043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26574 (or 26545 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 823947043 is about 28704.4777517376. The cubic root of 823947043 is about 937.4895450804.

The spelling of 823947043 in words is "eight hundred twenty-three million, nine hundred forty-seven thousand, forty-three".