159097909 has 2 divisors, whose sum is σ = 159097910. Its totient is φ = 159097908.

The previous prime is 159097889. The next prime is 159097919. The reversal of 159097909 is 909790951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81270225 + 77827684 = 9015^2 + 8822^2 .

It is a cyclic number.

It is not a de Polignac number, because 159097909 - 2¹¹ = 159095861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159097919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79548954 + 79548955.

It is an arithmetic number, because the mean of its divisors is an integer number (79548955).

Almost surely, 2^159097909 is an apocalyptic number.

It is an amenable number.

159097909 is a deficient number, since it is larger than the sum of its proper divisors (1).

159097909 is an equidigital number, since it uses as much as digits as its factorization.

159097909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 229635, while the sum is 49.

The square root of 159097909 is about 12613.4019598204. The cubic root of 159097909 is about 541.8613282941.

It can be divided in two parts, 1590 and 97909, that added together give a palindrome (99499).

The spelling of 159097909 in words is "one hundred fifty-nine million, ninety-seven thousand, nine hundred nine".