8813513421 has 8 divisors (see below), whose sum is σ = 13057056960. Its totient is φ = 5875675596.

The previous prime is 8813513399. The next prime is 8813513509. The reversal of 8813513421 is 1243153188.

8813513421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8813513421 - 2²² = 8809319117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8813513521) 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, 163213185 + ... + 163213238.

It is an arithmetic number, because the mean of its divisors is an integer number (1632132120).

Almost surely, 2^8813513421 is an apocalyptic number.

It is an amenable number.

8813513421 is a deficient number, since it is larger than the sum of its proper divisors (4243543539).

8813513421 is a wasteful number, since it uses less digits than its factorization.

8813513421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326426432 (or 326426426 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 8813513421 is about 93880.3143422518. The cubic root of 8813513421 is about 2065.6164810224.

The spelling of 8813513421 in words is "eight billion, eight hundred thirteen million, five hundred thirteen thousand, four hundred twenty-one".