8961885 has 12 divisors (see below), whose sum is σ = 15534012. Its totient is φ = 4779648.

The previous prime is 8961859. The next prime is 8961889. The reversal of 8961885 is 5881698.

It can be written as a sum of positive squares in 2 ways, for example, as 5171076 + 3790809 = 2274^2 + 1947^2 .

It is not a de Polignac number, because 8961885 - 2⁹ = 8961373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 199153 = 8961885 / (8 + 9 + 6 + 1 + 8 + 8 + 5).

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 8961885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8961889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99532 + ... + 99621.

It is an arithmetic number, because the mean of its divisors is an integer number (1294501).

Almost surely, 2^8961885 is an apocalyptic number.

It is an amenable number.

8961885 is a deficient number, since it is larger than the sum of its proper divisors (6572127).

8961885 is a wasteful number, since it uses less digits than its factorization.

8961885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199164 (or 199161 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 8961885 is about 2993.6407600111. The cubic root of 8961885 is about 207.7143283078.

The spelling of 8961885 in words is "eight million, nine hundred sixty-one thousand, eight hundred eighty-five".