34491 has 4 divisors (see below), whose sum is σ = 45992. Its totient is φ = 22992.

The previous prime is 34487. The next prime is 34499. The reversal of 34491 is 19443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19443 = 3 ⋅6481.

It is not a de Polignac number, because 34491 - 2² = 34487 is a prime.

It is a D-number.

It is a Duffinian number.

34491 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34499) 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, 5746 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (11498).

2³⁴⁴⁹¹ is an apocalyptic number.

34491 is a deficient number, since it is larger than the sum of its proper divisors (11501).

34491 is a wasteful number, since it uses less digits than its factorization.

34491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500.

The product of its digits is 432, while the sum is 21.

The square root of 34491 is about 185.7175274442. The cubic root of 34491 is about 32.5513193158.

It can be divided in two parts, 344 and 91, that added together give a triangular number (435 = T₂₉).

The spelling of 34491 in words is "thirty-four thousand, four hundred ninety-one".