4384428661 has 2 divisors, whose sum is σ = 4384428662. Its totient is φ = 4384428660.

The previous prime is 4384428649. The next prime is 4384428679. The reversal of 4384428661 is 1668244834.

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., 3212735761 + 1171692900 = 56681^2 + 34230^2 .

It is a cyclic number.

It is not a de Polignac number, because 4384428661 - 2⁹ = 4384428149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4384428641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2192214330 + 2192214331.

It is an arithmetic number, because the mean of its divisors is an integer number (2192214331).

Almost surely, 2^4384428661 is an apocalyptic number.

It is an amenable number.

4384428661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4384428661 is an equidigital number, since it uses as much as digits as its factorization.

4384428661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 884736, while the sum is 46.

The square root of 4384428661 is about 66215.0183946210. The cubic root of 4384428661 is about 1636.7072368429.

The spelling of 4384428661 in words is "four billion, three hundred eighty-four million, four hundred twenty-eight thousand, six hundred sixty-one".