108949 has 2 divisors, whose sum is σ = 108950. Its totient is φ = 108948.

The previous prime is 108947. The next prime is 108959. The reversal of 108949 is 949801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 49 = 330^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 108949 - 2¹ = 108947 is a prime.

Together with 108947, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 108949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54474 + 54475.

It is an arithmetic number, because the mean of its divisors is an integer number (54475).

2¹⁰⁸⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

108949 is a deficient number, since it is larger than the sum of its proper divisors (1).

108949 is an equidigital number, since it uses as much as digits as its factorization.

108949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 108949 is about 330.0742340747. The cubic root of 108949 is about 47.7611105054.

It can be divided in two parts, 1089 and 49, that multiplied together give a square (53361 = 231²).

The spelling of 108949 in words is "one hundred eight thousand, nine hundred forty-nine".