209340038 has 12 divisors (see below), whose sum is σ = 325213980. Its totient is φ = 101059896.

The previous prime is 209340037. The next prime is 209340041. The reversal of 209340038 is 830043902.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209340037) 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 5 ways as a sum of consecutive naturals, for example, 60548 + ... + 63911.

It is an arithmetic number, because the mean of its divisors is an integer number (27101165).

Almost surely, 2^209340038 is an apocalyptic number.

209340038 is a deficient number, since it is larger than the sum of its proper divisors (115873942).

209340038 is a wasteful number, since it uses less digits than its factorization.

209340038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124519 (or 124490 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 209340038 is about 14468.5879753347. The cubic root of 209340038 is about 593.7688811281.

The spelling of 209340038 in words is "two hundred nine million, three hundred forty thousand, thirty-eight".