8907426821 has 16 divisors (see below), whose sum is σ = 9796671360. Its totient is φ = 8071103040.

The previous prime is 8907426797. The next prime is 8907426863. The reversal of 8907426821 is 1286247098.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8907426821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8907423821) 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 15 ways as a sum of consecutive naturals, for example, 90635 + ... + 161336.

It is an arithmetic number, because the mean of its divisors is an integer number (612291960).

Almost surely, 2^8907426821 is an apocalyptic number.

It is an amenable number.

8907426821 is a deficient number, since it is larger than the sum of its proper divisors (889244539).

8907426821 is a wasteful number, since it uses less digits than its factorization.

8907426821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252076.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 8907426821 is about 94379.1651849072. The cubic root of 8907426821 is about 2072.9273790148.

The spelling of 8907426821 in words is "eight billion, nine hundred seven million, four hundred twenty-six thousand, eight hundred twenty-one".