109208975 has 6 divisors (see below), whose sum is σ = 135419160. Its totient is φ = 87367160.

The previous prime is 109208959. The next prime is 109208989. The reversal of 109208975 is 579802901.

It is not a de Polignac number, because 109208975 - 2⁴ = 109208959 is a prime.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2184155 + ... + 2184204.

It is an arithmetic number, because the mean of its divisors is an integer number (22569860).

Almost surely, 2^109208975 is an apocalyptic number.

109208975 is a deficient number, since it is larger than the sum of its proper divisors (26210185).

109208975 is an equidigital number, since it uses as much as digits as its factorization.

109208975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368369 (or 4368364 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 109208975 is about 10450.3098040202. The cubic root of 109208975 is about 477.9906964687.

It can be divided in two parts, 10920 and 8975, that multiplied together give a triangular number (98007000 = T₁₄₀₀₀).

The spelling of 109208975 in words is "one hundred nine million, two hundred eight thousand, nine hundred seventy-five".