34909 has 4 divisors (see below), whose sum is σ = 39904. Its totient is φ = 29916.

The previous prime is 34897. The next prime is 34913. The reversal of 34909 is 90943.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90943 = 199 ⋅457.

It is a cyclic number.

It is not a de Polignac number, because 34909 - 2⁵ = 34877 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

34909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2487 + ... + 2500.

It is an arithmetic number, because the mean of its divisors is an integer number (9976).

2³⁴⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

34909 is a deficient number, since it is larger than the sum of its proper divisors (4995).

34909 is an equidigital number, since it uses as much as digits as its factorization.

34909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4994.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 34909 is about 186.8395033177. The cubic root of 34909 is about 32.6822892556.

The spelling of 34909 in words is "thirty-four thousand, nine hundred nine".