113809805 has 8 divisors (see below), whose sum is σ = 138495744. Its totient is φ = 89765200.

The previous prime is 113809789. The next prime is 113809807. The reversal of 113809805 is 508908311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113809805 - 2⁴ = 113809789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113809807) 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 7 ways as a sum of consecutive naturals, for example, 159941 + ... + 160650.

It is an arithmetic number, because the mean of its divisors is an integer number (17311968).

Almost surely, 2^113809805 is an apocalyptic number.

It is an amenable number.

113809805 is a deficient number, since it is larger than the sum of its proper divisors (24685939).

113809805 is an equidigital number, since it uses as much as digits as its factorization.

113809805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320667.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 113809805 is about 10668.1678370749. The cubic root of 113809805 is about 484.6109538166.

The spelling of 113809805 in words is "one hundred thirteen million, eight hundred nine thousand, eight hundred five".