209489041 has 8 divisors (see below), whose sum is σ = 227628800. Its totient is φ = 192060720.

The previous prime is 209489039. The next prime is 209489047. The reversal of 209489041 is 140984902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 209489041 - 2¹ = 209489039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209489047) 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 7 ways as a sum of consecutive naturals, for example, 177246 + ... + 178423.

It is an arithmetic number, because the mean of its divisors is an integer number (28453600).

Almost surely, 2^209489041 is an apocalyptic number.

It is an amenable number.

209489041 is a deficient number, since it is larger than the sum of its proper divisors (18139759).

209489041 is a wasteful number, since it uses less digits than its factorization.

209489041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355719.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 209489041 is about 14473.7362488060. The cubic root of 209489041 is about 593.9097243270.

The spelling of 209489041 in words is "two hundred nine million, four hundred eighty-nine thousand, forty-one".