8816949949 has 2 divisors, whose sum is σ = 8816949950. Its totient is φ = 8816949948.

The previous prime is 8816949923. The next prime is 8816949997. The reversal of 8816949949 is 9499496188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4560300900 + 4256649049 = 67530^2 + 65243^2 .

It is a cyclic number.

It is not a de Polignac number, because 8816949949 - 2¹⁹ = 8816425661 is a prime.

It is a super-2 number, since 2×8816949949² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8816949049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4408474974 + 4408474975.

It is an arithmetic number, because the mean of its divisors is an integer number (4408474975).

Almost surely, 2^8816949949 is an apocalyptic number.

It is an amenable number.

8816949949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8816949949 is an equidigital number, since it uses as much as digits as its factorization.

8816949949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40310784, while the sum is 67.

The square root of 8816949949 is about 93898.6152666801. The cubic root of 8816949949 is about 2065.8849182930.

The spelling of 8816949949 in words is "eight billion, eight hundred sixteen million, nine hundred forty-nine thousand, nine hundred forty-nine".