159899893 has 2 divisors, whose sum is σ = 159899894. Its totient is φ = 159899892.

The previous prime is 159899879. The next prime is 159899897. The reversal of 159899893 is 398998951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114768369 + 45131524 = 10713^2 + 6718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159899893 is a prime.

It is a super-2 number, since 2×159899893² = 51135951562822898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159899897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79949946 + 79949947.

It is an arithmetic number, because the mean of its divisors is an integer number (79949947).

Almost surely, 2^159899893 is an apocalyptic number.

It is an amenable number.

159899893 is a deficient number, since it is larger than the sum of its proper divisors (1).

159899893 is an equidigital number, since it uses as much as digits as its factorization.

159899893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 61.

The square root of 159899893 is about 12645.1529449034. The cubic root of 159899893 is about 542.7702779459.

The spelling of 159899893 in words is "one hundred fifty-nine million, eight hundred ninety-nine thousand, eight hundred ninety-three".