159946 has 4 divisors (see below), whose sum is σ = 239922. Its totient is φ = 79972.

The previous prime is 159937. The next prime is 159977. The reversal of 159946 is 649951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649951 = 383 ⋅1697.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 19321 = 375^2 + 139^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39985 + ... + 39988.

2¹⁵⁹⁹⁴⁶ is an apocalyptic number.

159946 is a deficient number, since it is larger than the sum of its proper divisors (79976).

159946 is an equidigital number, since it uses as much as digits as its factorization.

159946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79975.

The product of its digits is 9720, while the sum is 34.

The square root of 159946 is about 399.9324943037. The cubic root of 159946 is about 54.2822442050.

The spelling of 159946 in words is "one hundred fifty-nine thousand, nine hundred forty-six".