4044345845 has 4 divisors (see below), whose sum is σ = 4853215020. Its totient is φ = 3235476672.

The previous prime is 4044345841. The next prime is 4044345881. The reversal of 4044345845 is 5485434404.

It is a happy number.

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 960876004 + 3083469841 = 30998^2 + 55529^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044345845 - 2² = 4044345841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044345841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404434580 + ... + 404434589.

It is an arithmetic number, because the mean of its divisors is an integer number (1213303755).

Almost surely, 2^4044345845 is an apocalyptic number.

It is an amenable number.

4044345845 is a deficient number, since it is larger than the sum of its proper divisors (808869175).

4044345845 is an equidigital number, since it uses as much as digits as its factorization.

4044345845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808869174.

The product of its (nonzero) digits is 614400, while the sum is 41.

The square root of 4044345845 is about 63595.1715541361. The cubic root of 4044345845 is about 1593.2457260537.

The spelling of 4044345845 in words is "four billion, forty-four million, three hundred forty-five thousand, eight hundred forty-five".