105805983 has 4 divisors (see below), whose sum is σ = 141074648. Its totient is φ = 70537320.

The previous prime is 105805979. The next prime is 105806021. The reversal of 105805983 is 389508501.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 105805983 - 2² = 105805979 is a prime.

It is a super-2 number, since 2×105805983² = 22389812077192578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105805913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17634328 + ... + 17634333.

It is an arithmetic number, because the mean of its divisors is an integer number (35268662).

Almost surely, 2^105805983 is an apocalyptic number.

105805983 is a deficient number, since it is larger than the sum of its proper divisors (35268665).

105805983 is an equidigital number, since it uses as much as digits as its factorization.

105805983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35268664.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 105805983 is about 10286.2035270551. The cubic root of 105805983 is about 472.9734276708.

The spelling of 105805983 in words is "one hundred five million, eight hundred five thousand, nine hundred eighty-three".