444111013 has 4 divisors (see below), whose sum is σ = 444281440. Its totient is φ = 443940588.

The previous prime is 444111011. The next prime is 444111029. The reversal of 444111013 is 310111444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444111013 - 2¹ = 444111011 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 (444111011) 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, 81243 + ... + 86536.

It is an arithmetic number, because the mean of its divisors is an integer number (111070360).

Almost surely, 2^444111013 is an apocalyptic number.

It is an amenable number.

444111013 is a deficient number, since it is larger than the sum of its proper divisors (170427).

444111013 is a wasteful number, since it uses less digits than its factorization.

444111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170426.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 444111013 is about 21073.9415629825. The cubic root of 444111013 is about 762.9519387628.

Adding to 444111013 its reverse (310111444), we get a palindrome (754222457).

The spelling of 444111013 in words is "four hundred forty-four million, one hundred eleven thousand, thirteen".