444752813 has 4 divisors (see below), whose sum is σ = 444803580. Its totient is φ = 444702048.

The previous prime is 444752801. The next prime is 444752831. The reversal of 444752813 is 318257444.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 240777289 + 203975524 = 15517^2 + 14282^2 .

It is a cyclic number.

It is not a de Polignac number, because 444752813 - 2¹⁴ = 444736429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444752843) 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, 8498 + ... + 31011.

It is an arithmetic number, because the mean of its divisors is an integer number (111200895).

Almost surely, 2^444752813 is an apocalyptic number.

It is an amenable number.

444752813 is a deficient number, since it is larger than the sum of its proper divisors (50767).

444752813 is a wasteful number, since it uses less digits than its factorization.

444752813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50766.

The product of its digits is 107520, while the sum is 38.

The square root of 444752813 is about 21089.1634020888. The cubic root of 444752813 is about 763.3192845038.

The spelling of 444752813 in words is "four hundred forty-four million, seven hundred fifty-two thousand, eight hundred thirteen".