109957813 has 12 divisors (see below), whose sum is σ = 128114112. Its totient is φ = 94099320.

The previous prime is 109957811. The next prime is 109957817. The reversal of 109957813 is 318759901.

It is not a de Polignac number, because 109957813 - 2¹ = 109957811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109957813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109957811) 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, 38356 + ... + 41122.

It is an arithmetic number, because the mean of its divisors is an integer number (10676176).

Almost surely, 2^109957813 is an apocalyptic number.

It is an amenable number.

109957813 is a deficient number, since it is larger than the sum of its proper divisors (18156299).

109957813 is an equidigital number, since it uses as much as digits as its factorization.

109957813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592 (or 3585 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 109957813 is about 10486.0771025203. The cubic root of 109957813 is about 479.0807246530.

The spelling of 109957813 in words is "one hundred nine million, nine hundred fifty-seven thousand, eight hundred thirteen".