159944399 has 2 divisors, whose sum is σ = 159944400. Its totient is φ = 159944398.

The previous prime is 159944353. The next prime is 159944419. The reversal of 159944399 is 993449951.

It is a happy number.

159944399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159944399 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159944399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159944329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79972199 + 79972200.

It is an arithmetic number, because the mean of its divisors is an integer number (79972200).

Almost surely, 2^159944399 is an apocalyptic number.

159944399 is a deficient number, since it is larger than the sum of its proper divisors (1).

159944399 is an equidigital number, since it uses as much as digits as its factorization.

159944399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1574640, while the sum is 53.

The square root of 159944399 is about 12646.9126271988. The cubic root of 159944399 is about 542.8206308941.

The spelling of 159944399 in words is "one hundred fifty-nine million, nine hundred forty-four thousand, three hundred ninety-nine".