206000049 has 4 divisors (see below), whose sum is σ = 274666736. Its totient is φ = 137333364.

The previous prime is 205999987. The next prime is 206000059. The reversal of 206000049 is 940000602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 206000049 - 2⁹ = 205999537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205999989 and 206000034.

It is not an unprimeable number, because it can be changed into a prime (206000059) 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, 34333339 + ... + 34333344.

It is an arithmetic number, because the mean of its divisors is an integer number (68666684).

Almost surely, 2^206000049 is an apocalyptic number.

It is an amenable number.

206000049 is a deficient number, since it is larger than the sum of its proper divisors (68666687).

206000049 is an equidigital number, since it uses as much as digits as its factorization.

206000049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68666686.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 206000049 is about 14352.7018014031. The cubic root of 206000049 is about 590.5941051895.

The spelling of 206000049 in words is "two hundred six million, forty-nine", and thus it is an aban number.