44143661 has 2 divisors, whose sum is σ = 44143662. Its totient is φ = 44143660.

The previous prime is 44143613. The next prime is 44143663. The reversal of 44143661 is 16634144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 649636 = 6595^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 44143661 - 2¹⁸ = 43881517 is a prime.

It is a super-3 number, since 3×44143661³ (a number of 24 digits) contains 333 as substring.

Together with 44143663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44143663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22071830 + 22071831.

It is an arithmetic number, because the mean of its divisors is an integer number (22071831).

Almost surely, 2^44143661 is an apocalyptic number.

It is an amenable number.

44143661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44143661 is an equidigital number, since it uses as much as digits as its factorization.

44143661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 44143661 is about 6644.0696113150. The cubic root of 44143661 is about 353.4186383763.

The spelling of 44143661 in words is "forty-four million, one hundred forty-three thousand, six hundred sixty-one".