205994449 has 4 divisors (see below), whose sum is σ = 208034100. Its totient is φ = 203954800.

The previous prime is 205994443. The next prime is 205994483. The reversal of 205994449 is 944499502.

It is a happy number.

205994449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 124724224 + 81270225 = 11168^2 + 9015^2 .

It is a cyclic number.

It is not a de Polignac number, because 205994449 - 2⁹ = 205993937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205994399 and 205994408.

It is not an unprimeable number, because it can be changed into a prime (205994443) 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, 1019674 + ... + 1019875.

It is an arithmetic number, because the mean of its divisors is an integer number (52008525).

Almost surely, 2^205994449 is an apocalyptic number.

It is an amenable number.

205994449 is a deficient number, since it is larger than the sum of its proper divisors (2039651).

205994449 is a wasteful number, since it uses less digits than its factorization.

205994449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039650.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 205994449 is about 14352.5067148565. The cubic root of 205994449 is about 590.5887534805.

The spelling of 205994449 in words is "two hundred five million, nine hundred ninety-four thousand, four hundred forty-nine".