8899909 has 2 divisors, whose sum is σ = 8899910. Its totient is φ = 8899908.

The previous prime is 8899867. The next prime is 8899927. The reversal of 8899909 is 9099988.

8899909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 49284 = 2975^2 + 222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8899909 is a prime.

8899909 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8899949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4449954 + 4449955.

It is an arithmetic number, because the mean of its divisors is an integer number (4449955).

Almost surely, 2^8899909 is an apocalyptic number.

It is an amenable number.

8899909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8899909 is an equidigital number, since it uses as much as digits as its factorization.

8899909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 8899909 is about 2983.2715263616. The cubic root of 8899909 is about 207.2344034966.

The spelling of 8899909 in words is "eight million, eight hundred ninety-nine thousand, nine hundred nine".