4455668989 has 2 divisors, whose sum is σ = 4455668990. Its totient is φ = 4455668988.

The previous prime is 4455668983. The next prime is 4455668999. The reversal of 4455668989 is 9898665544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3236472100 + 1219196889 = 56890^2 + 34917^2 .

It is a cyclic number.

It is not a de Polignac number, because 4455668989 - 2⁵ = 4455668957 is a prime.

It is a super-2 number, since 2×4455668989² = 39705972279072564242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4455668989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4455668983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2227834494 + 2227834495.

It is an arithmetic number, because the mean of its divisors is an integer number (2227834495).

Almost surely, 2^4455668989 is an apocalyptic number.

It is an amenable number.

4455668989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4455668989 is an equidigital number, since it uses as much as digits as its factorization.

4455668989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74649600, while the sum is 64.

The square root of 4455668989 is about 66750.7976656459. The cubic root of 4455668989 is about 1645.5243246882.

The spelling of 4455668989 in words is "four billion, four hundred fifty-five million, six hundred sixty-eight thousand, nine hundred eighty-nine".