159909223 has 2 divisors, whose sum is σ = 159909224. Its totient is φ = 159909222.

The previous prime is 159909209. The next prime is 159909229. The reversal of 159909223 is 322909951.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159909223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159909229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79954611 + 79954612.

It is an arithmetic number, because the mean of its divisors is an integer number (79954612).

Almost surely, 2^159909223 is an apocalyptic number.

159909223 is a deficient number, since it is larger than the sum of its proper divisors (1).

159909223 is an equidigital number, since it uses as much as digits as its factorization.

159909223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 159909223 is about 12645.5218555819. The cubic root of 159909223 is about 542.7808344428.

The spelling of 159909223 in words is "one hundred fifty-nine million, nine hundred nine thousand, two hundred twenty-three".