206443923 has 8 divisors (see below), whose sum is σ = 314581248. Its totient is φ = 117967944.

The previous prime is 206443921. The next prime is 206443943. The reversal of 206443923 is 329344602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206443923 - 2¹ = 206443921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206443921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4915311 + ... + 4915352.

It is an arithmetic number, because the mean of its divisors is an integer number (39322656).

Almost surely, 2^206443923 is an apocalyptic number.

206443923 is a deficient number, since it is larger than the sum of its proper divisors (108137325).

206443923 is an equidigital number, since it uses as much as digits as its factorization.

206443923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830673.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 206443923 is about 14368.1565623430. The cubic root of 206443923 is about 591.0179906972.

The spelling of 206443923 in words is "two hundred six million, four hundred forty-three thousand, nine hundred twenty-three".