44444921 has 2 divisors, whose sum is σ = 44444922. Its totient is φ = 44444920.

The previous prime is 44444893. The next prime is 44444941. The reversal of 44444921 is 12944444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43705321 + 739600 = 6611^2 + 860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44444921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44444941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22222460 + 22222461.

It is an arithmetic number, because the mean of its divisors is an integer number (22222461).

Almost surely, 2^44444921 is an apocalyptic number.

It is an amenable number.

44444921 is a deficient number, since it is larger than the sum of its proper divisors (1).

44444921 is an equidigital number, since it uses as much as digits as its factorization.

44444921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 32.

The square root of 44444921 is about 6666.7024082375. The cubic root of 44444921 is about 354.2207890960.

The spelling of 44444921 in words is "forty-four million, four hundred forty-four thousand, nine hundred twenty-one".