209000012 has 12 divisors (see below), whose sum is σ = 393884736. Its totient is φ = 96461520.

The previous prime is 208999993. The next prime is 209000017. The reversal of 209000012 is 210000902.

209000012 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

209000012 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (209000017) 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, 2009564 + ... + 2009667.

It is an arithmetic number, because the mean of its divisors is an integer number (32823728).

Almost surely, 2^209000012 is an apocalyptic number.

It is an amenable number.

209000012 is a deficient number, since it is larger than the sum of its proper divisors (184884724).

209000012 is a wasteful number, since it uses less digits than its factorization.

209000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019248 (or 4019246 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 209000012 is about 14456.8327098296. The cubic root of 209000012 is about 593.4472253978.

Adding to 209000012 its reverse (210000902), we get a palindrome (419000914).

The spelling of 209000012 in words is "two hundred nine million, twelve", and thus it is an aban number.