159409429 has 2 divisors, whose sum is σ = 159409430. Its totient is φ = 159409428.

The previous prime is 159409427. The next prime is 159409441. The reversal of 159409429 is 924904951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155500900 + 3908529 = 12470^2 + 1977^2 .

It is a cyclic number.

It is not a de Polignac number, because 159409429 - 2¹ = 159409427 is a prime.

It is a super-2 number, since 2×159409429² = 50822732108212082, which contains 22 as substring.

Together with 159409427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159409427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79704714 + 79704715.

It is an arithmetic number, because the mean of its divisors is an integer number (79704715).

Almost surely, 2^159409429 is an apocalyptic number.

It is an amenable number.

159409429 is a deficient number, since it is larger than the sum of its proper divisors (1).

159409429 is an equidigital number, since it uses as much as digits as its factorization.

159409429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 159409429 is about 12625.7446909083. The cubic root of 159409429 is about 542.2147596894.

The spelling of 159409429 in words is "one hundred fifty-nine million, four hundred nine thousand, four hundred twenty-nine".