2044621 has 2 divisors, whose sum is σ = 2044622. Its totient is φ = 2044620.

The previous prime is 2044577. The next prime is 2044633. The reversal of 2044621 is 1264402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 98596 = 1395^2 + 314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2044621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2044661) 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, 1022310 + 1022311.

It is an arithmetic number, because the mean of its divisors is an integer number (1022311).

2^2044621 is an apocalyptic number.

It is an amenable number.

2044621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044621 is an equidigital number, since it uses as much as digits as its factorization.

2044621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2044621 is about 1429.9024442248. The cubic root of 2044621 is about 126.9222041992.

The spelling of 2044621 in words is "two million, forty-four thousand, six hundred twenty-one".