44020661 has 2 divisors, whose sum is σ = 44020662. Its totient is φ = 44020660.

The previous prime is 44020657. The next prime is 44020681. The reversal of 44020661 is 16602044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 1705636 = 6505^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 44020661 - 2² = 44020657 is a prime.

It is a super-3 number, since 3×44020661³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44020621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22010330 + 22010331.

It is an arithmetic number, because the mean of its divisors is an integer number (22010331).

Almost surely, 2^44020661 is an apocalyptic number.

It is an amenable number.

44020661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44020661 is an equidigital number, since it uses as much as digits as its factorization.

44020661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 44020661 is about 6634.8067794021. The cubic root of 44020661 is about 353.0900828607.

The spelling of 44020661 in words is "forty-four million, twenty thousand, six hundred sixty-one".