107909809 has 12 divisors (see below), whose sum is σ = 126493488. Its totient is φ = 91782600.

The previous prime is 107909807. The next prime is 107909839. The reversal of 107909809 is 908909701.

It is not a de Polignac number, because 107909809 - 2¹ = 107909807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107909803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1987 + ... + 14824.

It is an arithmetic number, because the mean of its divisors is an integer number (10541124).

Almost surely, 2^107909809 is an apocalyptic number.

It is an amenable number.

107909809 is a deficient number, since it is larger than the sum of its proper divisors (18583679).

107909809 is a wasteful number, since it uses less digits than its factorization.

107909809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16956 (or 16949 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 107909809 is about 10387.9646225813. The cubic root of 107909809 is about 476.0877145160.

The spelling of 107909809 in words is "one hundred seven million, nine hundred nine thousand, eight hundred nine".