105749845 has 4 divisors (see below), whose sum is σ = 126899820. Its totient is φ = 84599872.

The previous prime is 105749821. The next prime is 105749879. The reversal of 105749845 is 548947501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52664049 + 53085796 = 7257^2 + 7286^2 .

It is a cyclic number.

It is not a de Polignac number, because 105749845 - 2¹³ = 105741653 is a prime.

It is a super-2 number, since 2×105749845² = 22366059435048050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10574980 + ... + 10574989.

It is an arithmetic number, because the mean of its divisors is an integer number (31724955).

Almost surely, 2^105749845 is an apocalyptic number.

It is an amenable number.

105749845 is a deficient number, since it is larger than the sum of its proper divisors (21149975).

105749845 is an equidigital number, since it uses as much as digits as its factorization.

105749845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21149974.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 105749845 is about 10283.4743642409. The cubic root of 105749845 is about 472.8897635943.

The spelling of 105749845 in words is "one hundred five million, seven hundred forty-nine thousand, eight hundred forty-five".