4393410661 has 2 divisors, whose sum is σ = 4393410662. Its totient is φ = 4393410660.

The previous prime is 4393410653. The next prime is 4393410689. The reversal of 4393410661 is 1660143934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3184457761 + 1208952900 = 56431^2 + 34770^2 .

It is a cyclic number.

It is not a de Polignac number, because 4393410661 - 2³ = 4393410653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4393410661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4393410761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2196705330 + 2196705331.

It is an arithmetic number, because the mean of its divisors is an integer number (2196705331).

Almost surely, 2^4393410661 is an apocalyptic number.

It is an amenable number.

4393410661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4393410661 is an equidigital number, since it uses as much as digits as its factorization.

4393410661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 4393410661 is about 66282.8081858335. The cubic root of 4393410661 is about 1637.8241347045.

The spelling of 4393410661 in words is "four billion, three hundred ninety-three million, four hundred ten thousand, six hundred sixty-one".