30399 has 4 divisors (see below), whose sum is σ = 40536. Its totient is φ = 20264.

The previous prime is 30391. The next prime is 30403. The reversal of 30399 is 99303.

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

It is a cyclic number.

It is not a de Polignac number, because 30399 - 2³ = 30391 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30391) 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, 5064 + ... + 5069.

It is an arithmetic number, because the mean of its divisors is an integer number (10134).

2³⁰³⁹⁹ is an apocalyptic number.

30399 is a deficient number, since it is larger than the sum of its proper divisors (10137).

30399 is a wasteful number, since it uses less digits than its factorization.

30399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10136.

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

The square root of 30399 is about 174.3530900214. The cubic root of 30399 is about 31.2094727975.

The spelling of 30399 in words is "thirty thousand, three hundred ninety-nine".