108249649 has 4 divisors (see below), whose sum is σ = 108346660. Its totient is φ = 108152640.

The previous prime is 108249643. The next prime is 108249667. The reversal of 108249649 is 946942801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63091249 + 45158400 = 7943^2 + 6720^2 .

It is a cyclic number.

It is not a de Polignac number, because 108249649 - 2³ = 108249641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108249641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46812 + ... + 49069.

It is an arithmetic number, because the mean of its divisors is an integer number (27086665).

Almost surely, 2^108249649 is an apocalyptic number.

It is an amenable number.

108249649 is a deficient number, since it is larger than the sum of its proper divisors (97011).

108249649 is an equidigital number, since it uses as much as digits as its factorization.

108249649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97010.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 108249649 is about 10404.3091553452. The cubic root of 108249649 is about 476.5869712612.

The spelling of 108249649 in words is "one hundred eight million, two hundred forty-nine thousand, six hundred forty-nine".