2046444221 has 4 divisors (see below), whose sum is σ = 2046543552. Its totient is φ = 2046344892.

The previous prime is 2046444163. The next prime is 2046444223. The reversal of 2046444221 is 1224446402.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2046444221 - 2¹⁴ = 2046427837 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 (2046444223) 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, 5915 + ... + 64248.

It is an arithmetic number, because the mean of its divisors is an integer number (511635888).

Almost surely, 2^2046444221 is an apocalyptic number.

It is an amenable number.

2046444221 is a deficient number, since it is larger than the sum of its proper divisors (99331).

2046444221 is an equidigital number, since it uses as much as digits as its factorization.

2046444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99330.

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 2046444221 is about 45237.6416383525. The cubic root of 2046444221 is about 1269.5991917247.

The spelling of 2046444221 in words is "two billion, forty-six million, four hundred forty-four thousand, two hundred twenty-one".