159440236 has 6 divisors (see below), whose sum is σ = 279020420. Its totient is φ = 79720116.

The previous prime is 159440213. The next prime is 159440257. The reversal of 159440236 is 632044951.

It is a happy number.

It is an unprimeable number.

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, 19930026 + ... + 19930033.

Almost surely, 2^159440236 is an apocalyptic number.

It is an amenable number.

159440236 is a deficient number, since it is larger than the sum of its proper divisors (119580184).

159440236 is a wasteful number, since it uses less digits than its factorization.

159440236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39860063 (or 39860061 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 159440236 is about 12626.9646392156. The cubic root of 159440236 is about 542.2496863857.

The spelling of 159440236 in words is "one hundred fifty-nine million, four hundred forty thousand, two hundred thirty-six".