20159329 has 2 divisors, whose sum is σ = 20159330. Its totient is φ = 20159328.

The previous prime is 20159327. The next prime is 20159333. The reversal of 20159329 is 92395102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 5870929 = 3780^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 20159329 - 2¹ = 20159327 is a prime.

Together with 20159327, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20159329.

It is not a weakly prime, because it can be changed into another prime (20159327) 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 as a sum of consecutive naturals, namely, 10079664 + 10079665.

It is an arithmetic number, because the mean of its divisors is an integer number (10079665).

Almost surely, 2^20159329 is an apocalyptic number.

It is an amenable number.

20159329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20159329 is an equidigital number, since it uses as much as digits as its factorization.

20159329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 20159329 is about 4489.9141417181. The cubic root of 20159329 is about 272.1606650638.

The spelling of 20159329 in words is "twenty million, one hundred fifty-nine thousand, three hundred twenty-nine".