44905661 has 2 divisors, whose sum is σ = 44905662. Its totient is φ = 44905660.

The previous prime is 44905603. The next prime is 44905669. The reversal of 44905661 is 16650944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42120100 + 2785561 = 6490^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 44905661 - 2¹⁰ = 44904637 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 (44905669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22452830 + 22452831.

It is an arithmetic number, because the mean of its divisors is an integer number (22452831).

Almost surely, 2^44905661 is an apocalyptic number.

It is an amenable number.

44905661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44905661 is an equidigital number, since it uses as much as digits as its factorization.

44905661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 44905661 is about 6701.1686294258. The cubic root of 44905661 is about 355.4405982132.

The spelling of 44905661 in words is "forty-four million, nine hundred five thousand, six hundred sixty-one".