8872909 has 2 divisors, whose sum is σ = 8872910. Its totient is φ = 8872908.

The previous prime is 8872907. The next prime is 8872937. The reversal of 8872909 is 9092788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7717284 + 1155625 = 2778^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 8872909 - 2¹ = 8872907 is a prime.

Together with 8872907, it forms a pair of twin primes.

8872909 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8872901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4436454 + 4436455.

It is an arithmetic number, because the mean of its divisors is an integer number (4436455).

Almost surely, 2^8872909 is an apocalyptic number.

It is an amenable number.

8872909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8872909 is an equidigital number, since it uses as much as digits as its factorization.

8872909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 8872909 is about 2978.7428556356. The cubic root of 8872909 is about 207.0246261942.

The spelling of 8872909 in words is "eight million, eight hundred seventy-two thousand, nine hundred nine".