209000034 has 32 divisors (see below), whose sum is σ = 484640640. Its totient is φ = 66637296.

The previous prime is 209000017. The next prime is 209000039. The reversal of 209000034 is 430000902.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 208999980 and 209000016.

It is not an unprimeable number, because it can be changed into a prime (209000039) 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 15 ways as a sum of consecutive naturals, for example, 82897 + ... + 85380.

It is an arithmetic number, because the mean of its divisors is an integer number (15145020).

Almost surely, 2^209000034 is an apocalyptic number.

209000034 is an abundant number, since it is smaller than the sum of its proper divisors (275640606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209000034 is a wasteful number, since it uses less digits than its factorization.

209000034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168311 (or 168305 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 209000034 is about 14456.8334707155. The cubic root of 209000034 is about 593.4472462205.

Adding to 209000034 its reverse (430000902), we get a palindrome (639000936).

The spelling of 209000034 in words is "two hundred nine million, thirty-four", and thus it is an aban number.