10909849 has 4 divisors (see below), whose sum is σ = 10916964. Its totient is φ = 10902736.

The previous prime is 10909841. The next prime is 10909853. The reversal of 10909849 is 94890901.

10909849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 4995225 = 2432^2 + 2235^2 .

It is a cyclic number.

It is not a de Polignac number, because 10909849 - 2³ = 10909841 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10909841) 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, 202 + ... + 4675.

It is an arithmetic number, because the mean of its divisors is an integer number (2729241).

Almost surely, 2^10909849 is an apocalyptic number.

It is an amenable number.

10909849 is a deficient number, since it is larger than the sum of its proper divisors (7115).

10909849 is an equidigital number, since it uses as much as digits as its factorization.

10909849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 10909849 is about 3303.0060550959. The cubic root of 10909849 is about 221.7887840388.

Subtracting from 10909849 its sum of digits (40), we obtain a square (10909809 = 3303²).

The spelling of 10909849 in words is "ten million, nine hundred nine thousand, eight hundred forty-nine".