29813 has 4 divisors (see below), whose sum is σ = 34080. Its totient is φ = 25548.

The previous prime is 29803. The next prime is 29819. The reversal of 29813 is 31892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29813 - 2¹⁰ = 28789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29819) 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, 2123 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (8520).

2²⁹⁸¹³ is an apocalyptic number.

It is an amenable number.

29813 is a deficient number, since it is larger than the sum of its proper divisors (4267).

29813 is an equidigital number, since it uses as much as digits as its factorization.

29813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266.

The product of its digits is 432, while the sum is 23.

The square root of 29813 is about 172.6644143997. The cubic root of 29813 is about 31.0076290623.

The spelling of 29813 in words is "twenty-nine thousand, eight hundred thirteen".