206472839 has 4 divisors (see below), whose sum is σ = 212053224. Its totient is φ = 200892456.

The previous prime is 206472793. The next prime is 206472857. The reversal of 206472839 is 938274602.

It is a happy number.

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 206472839 - 2¹⁶ = 206407303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206472796 and 206472805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206474839) 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 3 ways as a sum of consecutive naturals, for example, 2790137 + ... + 2790210.

It is an arithmetic number, because the mean of its divisors is an integer number (53013306).

Almost surely, 2^206472839 is an apocalyptic number.

206472839 is a deficient number, since it is larger than the sum of its proper divisors (5580385).

206472839 is an equidigital number, since it uses as much as digits as its factorization.

206472839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580384.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 206472839 is about 14369.1627800648. The cubic root of 206472839 is about 591.0455834661.

The spelling of 206472839 in words is "two hundred six million, four hundred seventy-two thousand, eight hundred thirty-nine".