44891641 has 2 divisors, whose sum is σ = 44891642. Its totient is φ = 44891640.

The previous prime is 44891633. The next prime is 44891657. The reversal of 44891641 is 14619844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44836416 + 55225 = 6696^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 44891641 - 2³ = 44891633 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 44891641.

It is not a weakly prime, because it can be changed into another prime (44891141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22445820 + 22445821.

It is an arithmetic number, because the mean of its divisors is an integer number (22445821).

Almost surely, 2^44891641 is an apocalyptic number.

It is an amenable number.

44891641 is a deficient number, since it is larger than the sum of its proper divisors (1).

44891641 is an equidigital number, since it uses as much as digits as its factorization.

44891641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 44891641 is about 6700.1224615674. The cubic root of 44891641 is about 355.4036036504.

The spelling of 44891641 in words is "forty-four million, eight hundred ninety-one thousand, six hundred forty-one".