4109845 has 8 divisors (see below), whose sum is σ = 4977720. Its totient is φ = 3257280.

The previous prime is 4109843. The next prime is 4109857. The reversal of 4109845 is 5489014.

4109845 = 1433² + 1434².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 165649 + 3944196 = 407^2 + 1986^2 .

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

It is not a de Polignac number, because 4109845 - 2¹ = 4109843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4109843) 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, 3226 + ... + 4315.

It is an arithmetic number, because the mean of its divisors is an integer number (622215).

Almost surely, 2^4109845 is an apocalyptic number.

4109845 is the 1434-th centered square number.

It is an amenable number.

4109845 is a deficient number, since it is larger than the sum of its proper divisors (867875).

4109845 is a wasteful number, since it uses less digits than its factorization.

4109845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4109845 is about 2027.2752649801. The cubic root of 4109845 is about 160.1800707024.

The spelling of 4109845 in words is "four million, one hundred nine thousand, eight hundred forty-five".