209060838 has 160 divisors (see below), whose sum is σ = 583587840. Its totient is φ = 54587520.

The previous prime is 209060833. The next prime is 209060861. The reversal of 209060838 is 838060902.

209060838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209060833) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 667770 + ... + 668082.

It is an arithmetic number, because the mean of its divisors is an integer number (3647424).

Almost surely, 2^209060838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209060838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291793920).

209060838 is an abundant number, since it is smaller than the sum of its proper divisors (374527002).

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

209060838 is a wasteful number, since it uses less digits than its factorization.

209060838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 209060838 is about 14458.9362679279. The cubic root of 209060838 is about 593.5047908167.

The spelling of 209060838 in words is "two hundred nine million, sixty thousand, eight hundred thirty-eight".