29891 has 4 divisors (see below), whose sum is σ = 30384. Its totient is φ = 29400.

The previous prime is 29881. The next prime is 29917. The reversal of 29891 is 19892.

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 29891 - 2¹⁰ = 28867 is a prime.

It is a pancake number, because a pancake can be divided into 29891 parts by 244 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29851) 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, 140 + ... + 281.

It is an arithmetic number, because the mean of its divisors is an integer number (7596).

2²⁹⁸⁹¹ is an apocalyptic number.

29891 is a deficient number, since it is larger than the sum of its proper divisors (493).

29891 is an equidigital number, since it uses as much as digits as its factorization.

29891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

The product of its digits is 1296, while the sum is 29.

The square root of 29891 is about 172.8901385273. The cubic root of 29891 is about 31.0346473526.

Subtracting from 29891 its reverse (19892), we obtain a palindrome (9999).

The spelling of 29891 in words is "twenty-nine thousand, eight hundred ninety-one".