209049038 has 36 divisors (see below), whose sum is σ = 354800376. Its totient is φ = 92307600.

The previous prime is 209049031. The next prime is 209049079. The reversal of 209049038 is 830940902.

209049038 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 209048989 and 209049007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209049031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 330983 + ... + 331613.

It is an arithmetic number, because the mean of its divisors is an integer number (9855566).

Almost surely, 2^209049038 is an apocalyptic number.

209049038 is a deficient number, since it is larger than the sum of its proper divisors (145751338).

209049038 is a wasteful number, since it uses less digits than its factorization.

209049038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 209049038 is about 14458.5282100219. The cubic root of 209049038 is about 593.4936242294.

The spelling of 209049038 in words is "two hundred nine million, forty-nine thousand, thirty-eight".