44618621 has 2 divisors, whose sum is σ = 44618622. Its totient is φ = 44618620.

The previous prime is 44618599. The next prime is 44618657. The reversal of 44618621 is 12681644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43375396 + 1243225 = 6586^2 + 1115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44618621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44618681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22309310 + 22309311.

It is an arithmetic number, because the mean of its divisors is an integer number (22309311).

Almost surely, 2^44618621 is an apocalyptic number.

It is an amenable number.

44618621 is a deficient number, since it is larger than the sum of its proper divisors (1).

44618621 is an equidigital number, since it uses as much as digits as its factorization.

44618621 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 44618621 is about 6679.7171347296. The cubic root of 44618621 is about 354.6816454272.

The spelling of 44618621 in words is "forty-four million, six hundred eighteen thousand, six hundred twenty-one".