108949939 has 4 divisors (see below), whose sum is σ = 124514224. Its totient is φ = 93385656.

The previous prime is 108949937. The next prime is 108949963. The reversal of 108949939 is 939949801.

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

It is not a de Polignac number, because 108949939 - 2¹ = 108949937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108949937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7782132 + ... + 7782145.

It is an arithmetic number, because the mean of its divisors is an integer number (31128556).

Almost surely, 2^108949939 is an apocalyptic number.

108949939 is a deficient number, since it is larger than the sum of its proper divisors (15564285).

108949939 is an equidigital number, since it uses as much as digits as its factorization.

108949939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15564284.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 108949939 is about 10437.9087464875. The cubic root of 108949939 is about 477.6124771811.

The spelling of 108949939 in words is "one hundred eight million, nine hundred forty-nine thousand, nine hundred thirty-nine".