30939 has 4 divisors (see below), whose sum is σ = 41256. Its totient is φ = 20624.

The previous prime is 30937. The next prime is 30941. The reversal of 30939 is 93903.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30937) and next prime (30941).

It is a cyclic number.

It is not a de Polignac number, because 30939 - 2¹ = 30937 is a prime.

It is a D-number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (30931) 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, 5154 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (10314).

2³⁰⁹³⁹ is an apocalyptic number.

30939 is a deficient number, since it is larger than the sum of its proper divisors (10317).

30939 is a wasteful number, since it uses less digits than its factorization.

30939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316.

The product of its (nonzero) digits is 729, while the sum is 24.

The square root of 30939 is about 175.8948549560. The cubic root of 30939 is about 31.3931882394.

It can be divided in two parts, 30 and 939, that added together give a palindrome (969).

The spelling of 30939 in words is "thirty thousand, nine hundred thirty-nine".