8870909 has 2 divisors, whose sum is σ = 8870910. Its totient is φ = 8870908.

The previous prime is 8870899. The next prime is 8870947. The reversal of 8870909 is 9090788.

8870909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8265625 + 605284 = 2875^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 8870909 - 2²⁰ = 7822333 is a prime.

8870909 is a modest number, since divided by 909 gives 887 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8870959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4435454 + 4435455.

It is an arithmetic number, because the mean of its divisors is an integer number (4435455).

Almost surely, 2^8870909 is an apocalyptic number.

It is an amenable number.

8870909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8870909 is an equidigital number, since it uses as much as digits as its factorization.

8870909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 8870909 is about 2978.4071246222. The cubic root of 8870909 is about 207.0090702149.

It can be divided in two parts, 8870 and 909, that added together give a palindrome (9779).

The spelling of 8870909 in words is "eight million, eight hundred seventy thousand, nine hundred nine".