4443534661 has 2 divisors, whose sum is σ = 4443534662. Its totient is φ = 4443534660.

The previous prime is 4443534649. The next prime is 4443534707. The reversal of 4443534661 is 1664353444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3466972161 + 976562500 = 58881^2 + 31250^2 .

It is a cyclic number.

It is not a de Polignac number, because 4443534661 - 2¹⁵ = 4443501893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4443534961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221767330 + 2221767331.

It is an arithmetic number, because the mean of its divisors is an integer number (2221767331).

Almost surely, 2^4443534661 is an apocalyptic number.

It is an amenable number.

4443534661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4443534661 is an equidigital number, since it uses as much as digits as its factorization.

4443534661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 40.

The square root of 4443534661 is about 66659.8429416092. The cubic root of 4443534661 is about 1644.0291892855.

The spelling of 4443534661 in words is "four billion, four hundred forty-three million, five hundred thirty-four thousand, six hundred sixty-one".