44616821 has 2 divisors, whose sum is σ = 44616822. Its totient is φ = 44616820.

The previous prime is 44616809. The next prime is 44616829. The reversal of 44616821 is 12861644.

44616821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35700625 + 8916196 = 5975^2 + 2986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44616821 is a prime.

It is a super-2 number, since 2×44616821² = 3981321432292082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44616829) 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, 22308410 + 22308411.

It is an arithmetic number, because the mean of its divisors is an integer number (22308411).

Almost surely, 2^44616821 is an apocalyptic number.

It is an amenable number.

44616821 is a deficient number, since it is larger than the sum of its proper divisors (1).

44616821 is an equidigital number, since it uses as much as digits as its factorization.

44616821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 44616821 is about 6679.5823971263. The cubic root of 44616821 is about 354.6768758525.

The spelling of 44616821 in words is "forty-four million, six hundred sixteen thousand, eight hundred twenty-one".