209059738 has 16 divisors (see below), whose sum is σ = 321640704. Its totient is φ = 101852640.

The previous prime is 209059733. The next prime is 209059757. The reversal of 209059738 is 837950902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 209059694 and 209059703.

It is not an unprimeable number, because it can be changed into a prime (209059733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127681 + ... + 129307.

It is an arithmetic number, because the mean of its divisors is an integer number (20102544).

Almost surely, 2^209059738 is an apocalyptic number.

209059738 is a deficient number, since it is larger than the sum of its proper divisors (112580966).

209059738 is a wasteful number, since it uses less digits than its factorization.

209059738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 209059738 is about 14458.8982291183. The cubic root of 209059738 is about 593.5037498814.

The spelling of 209059738 in words is "two hundred nine million, fifty-nine thousand, seven hundred thirty-eight".