4044421 has 2 divisors, whose sum is σ = 4044422. Its totient is φ = 4044420.

The previous prime is 4044413. The next prime is 4044431. The reversal of 4044421 is 1244404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3568321 + 476100 = 1889^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044421 - 2³ = 4044413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4044401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022210 + 2022211.

It is an arithmetic number, because the mean of its divisors is an integer number (2022211).

Almost surely, 2^4044421 is an apocalyptic number.

It is an amenable number.

4044421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4044421 is an equidigital number, since it uses as much as digits as its factorization.

4044421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 4044421 is about 2011.0745883731. The cubic root of 4044421 is about 159.3255594946.

Adding to 4044421 its reverse (1244404), we get a palindrome (5288825).

It can be divided in two parts, 4044 and 421, that added together give a triangular number (4465 = T₉₄).

The spelling of 4044421 in words is "four million, forty-four thousand, four hundred twenty-one".