4044454891 has 2 divisors, whose sum is σ = 4044454892. Its totient is φ = 4044454890.

The previous prime is 4044454877. The next prime is 4044454943. The reversal of 4044454891 is 1984544404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4044454891 - 2⁵ = 4044454859 is a prime.

It is not a weakly prime, because it can be changed into another prime (4044454591) 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 as a sum of consecutive naturals, namely, 2022227445 + 2022227446.

It is an arithmetic number, because the mean of its divisors is an integer number (2022227446).

Almost surely, 2^4044454891 is an apocalyptic number.

4044454891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4044454891 is an equidigital number, since it uses as much as digits as its factorization.

4044454891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 4044454891 is about 63596.0288933201. The cubic root of 4044454891 is about 1593.2600452636.

The spelling of 4044454891 in words is "four billion, forty-four million, four hundred fifty-four thousand, eight hundred ninety-one".