108699849 has 12 divisors (see below), whose sum is σ = 158630836. Its totient is φ = 71718912.

The previous prime is 108699839. The next prime is 108699881. The reversal of 108699849 is 948996801.

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 93954249 = 3840^2 + 9693^2 .

It is not a de Polignac number, because 108699849 - 2⁸ = 108699593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108699795 and 108699804.

It is not an unprimeable number, because it can be changed into a prime (108699839) 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 11 ways as a sum of consecutive naturals, for example, 61384 + ... + 63129.

Almost surely, 2^108699849 is an apocalyptic number.

It is an amenable number.

108699849 is a deficient number, since it is larger than the sum of its proper divisors (49930987).

108699849 is a wasteful number, since it uses less digits than its factorization.

108699849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124616 (or 124613 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 108699849 is about 10425.9219736194. The cubic root of 108699849 is about 477.2467507544.

The spelling of 108699849 in words is "one hundred eight million, six hundred ninety-nine thousand, eight hundred forty-nine".