8988005 has 16 divisors (see below), whose sum is σ = 11838960. Its totient is φ = 6509568.

The previous prime is 8987981. The next prime is 8988013. The reversal of 8988005 is 5008898.

It is a Cunningham number, because it is equal to 2998²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 232324 + 8755681 = 482^2 + 2959^2 .

It is not a de Polignac number, because 8988005 - 2⁸ = 8987749 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8988005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2141 + ... + 4749.

It is an arithmetic number, because the mean of its divisors is an integer number (739935).

Almost surely, 2^8988005 is an apocalyptic number.

It is an amenable number.

8988005 is a deficient number, since it is larger than the sum of its proper divisors (2850955).

8988005 is a wasteful number, since it uses less digits than its factorization.

8988005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 8988005 is about 2998.0001667778. Note that the first 3 decimals coincide. The cubic root of 8988005 is about 207.9159315711.

The spelling of 8988005 in words is "eight million, nine hundred eighty-eight thousand, five".