209492159 has 2 divisors, whose sum is σ = 209492160. Its totient is φ = 209492158.

The previous prime is 209492149. The next prime is 209492209. The reversal of 209492159 is 951294902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 209492159 - 2¹² = 209488063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209492149) by changing a digit.

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 as a sum of consecutive naturals, namely, 104746079 + 104746080.

It is an arithmetic number, because the mean of its divisors is an integer number (104746080).

Almost surely, 2^209492159 is an apocalyptic number.

209492159 is a deficient number, since it is larger than the sum of its proper divisors (1).

209492159 is an equidigital number, since it uses as much as digits as its factorization.

209492159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 209492159 is about 14473.8439607452. The cubic root of 209492159 is about 593.9126708636.

The spelling of 209492159 in words is "two hundred nine million, four hundred ninety-two thousand, one hundred fifty-nine".