4245695989 has 2 divisors, whose sum is σ = 4245695990. Its totient is φ = 4245695988.

The previous prime is 4245695969. The next prime is 4245696029. The reversal of 4245695989 is 9895965424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3245239089 + 1000456900 = 56967^2 + 31630^2 .

It is a cyclic number.

It is not a de Polignac number, because 4245695989 - 2¹¹ = 4245693941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4245695959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122847994 + 2122847995.

It is an arithmetic number, because the mean of its divisors is an integer number (2122847995).

Almost surely, 2^4245695989 is an apocalyptic number.

It is an amenable number.

4245695989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245695989 is an equidigital number, since it uses as much as digits as its factorization.

4245695989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 61.

The square root of 4245695989 is about 65159.0054328640. The cubic root of 4245695989 is about 1619.2589189007.

The spelling of 4245695989 in words is "four billion, two hundred forty-five million, six hundred ninety-five thousand, nine hundred eighty-nine".