30799 has 4 divisors (see below), whose sum is σ = 32440. Its totient is φ = 29160.

The previous prime is 30781. The next prime is 30803. The reversal of 30799 is 99703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99703 = 179 ⋅557.

It is a cyclic number.

It is not a de Polignac number, because 30799 - 2⁷ = 30671 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 (31799) 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, 792 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (8110).

2³⁰⁷⁹⁹ is an apocalyptic number.

30799 is a deficient number, since it is larger than the sum of its proper divisors (1641).

30799 is a wasteful number, since it uses less digits than its factorization.

30799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 30799 is about 175.4964387103. The cubic root of 30799 is about 31.3457648976.

It can be divided in two parts, 307 and 99, that added together give a triangular number (406 = T₂₈).

The spelling of 30799 in words is "thirty thousand, seven hundred ninety-nine".