209159422 has 16 divisors (see below), whose sum is σ = 318670560. Its totient is φ = 102948192.

The previous prime is 209159399. The next prime is 209159441. The reversal of 209159422 is 224951902.

It is a super-2 number, since 2×209159422² = 87495327622748168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32704 + ... + 38572.

It is an arithmetic number, because the mean of its divisors is an integer number (19916910).

Almost surely, 2^209159422 is an apocalyptic number.

209159422 is a deficient number, since it is larger than the sum of its proper divisors (109511138).

209159422 is a wasteful number, since it uses less digits than its factorization.

209159422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6147.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 209159422 is about 14462.3449689184. The cubic root of 209159422 is about 593.5980665067.

The spelling of 209159422 in words is "two hundred nine million, one hundred fifty-nine thousand, four hundred twenty-two".