205909412 has 6 divisors (see below), whose sum is σ = 360341478. Its totient is φ = 102954704.

The previous prime is 205909411. The next prime is 205909427. The reversal of 205909412 is 214909502.

205909412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 202322176 + 3587236 = 14224^2 + 1894^2 .

It is not an unprimeable number, because it can be changed into a prime (205909411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25738673 + ... + 25738680.

It is an arithmetic number, because the mean of its divisors is an integer number (60056913).

Almost surely, 2^205909412 is an apocalyptic number.

It is an amenable number.

205909412 is a deficient number, since it is larger than the sum of its proper divisors (154432066).

205909412 is a wasteful number, since it uses less digits than its factorization.

205909412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51477357 (or 51477355 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 205909412 is about 14349.5439648792. The cubic root of 205909412 is about 590.5074749017.

The spelling of 205909412 in words is "two hundred five million, nine hundred nine thousand, four hundred twelve".