4445688899 has 2 divisors, whose sum is σ = 4445688900. Its totient is φ = 4445688898.

The previous prime is 4445688857. The next prime is 4445688937. The reversal of 4445688899 is 9988865444.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4445688899 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (4445688809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222844449 + 2222844450.

It is an arithmetic number, because the mean of its divisors is an integer number (2222844450).

Almost surely, 2^4445688899 is an apocalyptic number.

4445688899 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445688899 is an equidigital number, since it uses as much as digits as its factorization.

4445688899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79626240, while the sum is 65.

The square root of 4445688899 is about 66675.9994225808. Note that the first 3 decimals coincide. The cubic root of 4445688899 is about 1644.2948230092.

The spelling of 4445688899 in words is "four billion, four hundred forty-five million, six hundred eighty-eight thousand, eight hundred ninety-nine".