939959 has 4 divisors (see below), whose sum is σ = 946104. Its totient is φ = 933816.

The previous prime is 939931. The next prime is 939971. The reversal of 939959 is 959939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959939 = 17 ⋅56467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2837 + ... + 3150.

It is an arithmetic number, because the mean of its divisors is an integer number (236526).

2⁹³⁹⁹⁵⁹ is an apocalyptic number.

939959 is a deficient number, since it is larger than the sum of its proper divisors (6145).

939959 is a wasteful number, since it uses less digits than its factorization.

939959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6144.

The product of its digits is 98415, while the sum is 44.

The square root of 939959 is about 969.5148271172. The cubic root of 939959 is about 97.9571866299.

The spelling of 939959 in words is "nine hundred thirty-nine thousand, nine hundred fifty-nine".