8961211 has 4 divisors (see below), whose sum is σ = 10241392. Its totient is φ = 7681032.

The previous prime is 8961209. The next prime is 8961221. The reversal of 8961211 is 1121698.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8961211 - 2¹ = 8961209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8961211.

It is not an unprimeable number, because it can be changed into a prime (8961221) 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 in 3 ways as a sum of consecutive naturals, for example, 640080 + ... + 640093.

It is an arithmetic number, because the mean of its divisors is an integer number (2560348).

Almost surely, 2^8961211 is an apocalyptic number.

8961211 is a deficient number, since it is larger than the sum of its proper divisors (1280181).

8961211 is a wasteful number, since it uses less digits than its factorization.

8961211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280180.

The product of its digits is 864, while the sum is 28.

The square root of 8961211 is about 2993.5281859371. The cubic root of 8961211 is about 207.7091209596.

The spelling of 8961211 in words is "eight million, nine hundred sixty-one thousand, two hundred eleven".