205773489 has 12 divisors (see below), whose sum is σ = 297371776. Its totient is φ = 137116152.

The previous prime is 205773487. The next prime is 205773499. The reversal of 205773489 is 984377502.

205773489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205773489 - 2¹ = 205773487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205773481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20772 + ... + 29034.

Almost surely, 2^205773489 is an apocalyptic number.

It is an amenable number.

205773489 is a deficient number, since it is larger than the sum of its proper divisors (91598287).

205773489 is a wasteful number, since it uses less digits than its factorization.

205773489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036 (or 11033 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 205773489 is about 14344.8070394830. The cubic root of 205773489 is about 590.3775128727.

The spelling of 205773489 in words is "two hundred five million, seven hundred seventy-three thousand, four hundred eighty-nine".