44228813 has 4 divisors (see below), whose sum is σ = 44245248. Its totient is φ = 44212380.

The previous prime is 44228803. The next prime is 44228879. The reversal of 44228813 is 31882244.

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 44228813 - 2⁴ = 44228797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44228813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44228803) 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, 3131 + ... + 9912.

It is an arithmetic number, because the mean of its divisors is an integer number (11061312).

Almost surely, 2^44228813 is an apocalyptic number.

It is an amenable number.

44228813 is a deficient number, since it is larger than the sum of its proper divisors (16435).

44228813 is a wasteful number, since it uses less digits than its factorization.

44228813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16434.

The product of its digits is 12288, while the sum is 32.

The square root of 44228813 is about 6650.4746447152. The cubic root of 44228813 is about 353.6457376060.

The spelling of 44228813 in words is "forty-four million, two hundred twenty-eight thousand, eight hundred thirteen".