2044421 has 2 divisors, whose sum is σ = 2044422. Its totient is φ = 2044420.

The previous prime is 2044411. The next prime is 2044463. The reversal of 2044421 is 1244402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1653796 + 390625 = 1286^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044421 - 2¹⁰ = 2043397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2044421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2044411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022210 + 1022211.

It is an arithmetic number, because the mean of its divisors is an integer number (1022211).

2^2044421 is an apocalyptic number.

It is an amenable number.

2044421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044421 is an equidigital number, since it uses as much as digits as its factorization.

2044421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2044421 is about 1429.8325076735. The cubic root of 2044421 is about 126.9180656541.

Adding to 2044421 its reverse (1244402), we get a palindrome (3288823).

The spelling of 2044421 in words is "two million, forty-four thousand, four hundred twenty-one".