4003044454421 has 2 divisors, whose sum is σ = 4003044454422. Its totient is φ = 4003044454420.

The previous prime is 4003044454393. The next prime is 4003044454469. The reversal of 4003044454421 is 1244544403004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3538213668196 + 464830786225 = 1881014^2 + 681785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4003044454421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4003044454481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001522227210 + 2001522227211.

It is an arithmetic number, because the mean of its divisors is an integer number (2001522227211).

Almost surely, 2^{4003044454421} is an apocalyptic number.

It is an amenable number.

4003044454421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003044454421 is an equidigital number, since it uses as much as digits as its factorization.

4003044454421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 4003044454421 its reverse (1244544403004), we get a palindrome (5247588857425).

The spelling of 4003044454421 in words is "four trillion, three billion, forty-four million, four hundred fifty-four thousand, four hundred twenty-one".