4044554221 has 8 divisors (see below), whose sum is σ = 4181497344. Its totient is φ = 3908015760.

The previous prime is 4044554203. The next prime is 4044554273. The reversal of 4044554221 is 1224554404.

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

It is a cyclic number.

It is not a de Polignac number, because 4044554221 - 2¹³ = 4044546029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044554291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80770 + ... + 120883.

It is an arithmetic number, because the mean of its divisors is an integer number (522687168).

Almost surely, 2^4044554221 is an apocalyptic number.

It is an amenable number.

4044554221 is a deficient number, since it is larger than the sum of its proper divisors (136943123).

4044554221 is a wasteful number, since it uses less digits than its factorization.

4044554221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202331.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 4044554221 is about 63596.8098335129. The cubic root of 4044554221 is about 1593.2730884078.

The spelling of 4044554221 in words is "four billion, forty-four million, five hundred fifty-four thousand, two hundred twenty-one".