8955991 has 16 divisors (see below), whose sum is σ = 10575360. Its totient is φ = 7492480.

The previous prime is 8955979. The next prime is 8956001. The reversal of 8955991 is 1995598.

8955991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8955991 - 2¹¹ = 8953943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8955971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8280 + ... + 9298.

It is an arithmetic number, because the mean of its divisors is an integer number (660960).

Almost surely, 2^8955991 is an apocalyptic number.

8955991 is a deficient number, since it is larger than the sum of its proper divisors (1619369).

8955991 is a wasteful number, since it uses less digits than its factorization.

8955991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its digits is 145800, while the sum is 46.

The square root of 8955991 is about 2992.6561780465. The cubic root of 8955991 is about 207.6687822075.

It can be divided in two parts, 895 and 5991, that added together give a palindrome (6886).

The spelling of 8955991 in words is "eight million, nine hundred fifty-five thousand, nine hundred ninety-one".