820032943 has 4 divisors (see below), whose sum is σ = 833476168. Its totient is φ = 806589720.

The previous prime is 820032931. The next prime is 820032953. The reversal of 820032943 is 349230028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 820032943 - 2⁵ = 820032911 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 (820032953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6721521 + ... + 6721642.

It is an arithmetic number, because the mean of its divisors is an integer number (208369042).

Almost surely, 2^820032943 is an apocalyptic number.

820032943 is a deficient number, since it is larger than the sum of its proper divisors (13443225).

820032943 is a wasteful number, since it uses less digits than its factorization.

820032943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13443224.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 820032943 is about 28636.2173305065. The cubic root of 820032943 is about 936.0026964243.

The spelling of 820032943 in words is "eight hundred twenty million, thirty-two thousand, nine hundred forty-three".