159873389 has 8 divisors (see below), whose sum is σ = 182299320. Its totient is φ = 138894336.

The previous prime is 159873379. The next prime is 159873397. The reversal of 159873389 is 983378951.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6980164 + 152893225 = 2642^2 + 12365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159873389 - 2¹² = 159869293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159873389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159873319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361484 + ... + 361925.

It is an arithmetic number, because the mean of its divisors is an integer number (22787415).

Almost surely, 2^159873389 is an apocalyptic number.

It is an amenable number.

159873389 is a deficient number, since it is larger than the sum of its proper divisors (22425931).

159873389 is a wasteful number, since it uses less digits than its factorization.

159873389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723439.

The product of its digits is 1632960, while the sum is 53.

The square root of 159873389 is about 12644.1049109852. The cubic root of 159873389 is about 542.7402875603.

The spelling of 159873389 in words is "one hundred fifty-nine million, eight hundred seventy-three thousand, three hundred eighty-nine".