209038049 has 16 divisors (see below), whose sum is σ = 239936256. Its totient is φ = 180374400.

The previous prime is 209038021. The next prime is 209038051. The reversal of 209038049 is 940830902.

It is a cyclic number.

It is not a de Polignac number, because 209038049 - 2⁸ = 209037793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209038009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10424 + ... + 22950.

It is an arithmetic number, because the mean of its divisors is an integer number (14996016).

Almost surely, 2^209038049 is an apocalyptic number.

It is an amenable number.

209038049 is a deficient number, since it is larger than the sum of its proper divisors (30898207).

209038049 is a wasteful number, since it uses less digits than its factorization.

209038049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12616.

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

The square root of 209038049 is about 14458.1481870951. The cubic root of 209038049 is about 593.4832247305.

The spelling of 209038049 in words is "two hundred nine million, thirty-eight thousand, forty-nine".