8907428891 has 8 divisors (see below), whose sum is σ = 9328269984. Its totient is φ = 8489384640.

The previous prime is 8907428863. The next prime is 8907428897. The reversal of 8907428891 is 1988247098.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-8907428891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8907428897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692690 + ... + 705431.

It is an arithmetic number, because the mean of its divisors is an integer number (1166033748).

Almost surely, 2^8907428891 is an apocalyptic number.

8907428891 is a deficient number, since it is larger than the sum of its proper divisors (420841093).

8907428891 is a wasteful number, since it uses less digits than its factorization.

8907428891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398421.

The product of its (nonzero) digits is 2322432, while the sum is 56.

The square root of 8907428891 is about 94379.1761513100. The cubic root of 8907428891 is about 2072.9275395909.

The spelling of 8907428891 in words is "eight billion, nine hundred seven million, four hundred twenty-eight thousand, eight hundred ninety-one".