8913121 has 24 divisors (see below), whose sum is σ = 11148480. Its totient is φ = 6970656.

The previous prime is 8913119. The next prime is 8913139. The reversal of 8913121 is 1213198.

It is not a de Polignac number, because 8913121 - 2¹ = 8913119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8913161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107346 + ... + 107428.

It is an arithmetic number, because the mean of its divisors is an integer number (464520).

Almost surely, 2^8913121 is an apocalyptic number.

It is an amenable number.

8913121 is a deficient number, since it is larger than the sum of its proper divisors (2235359).

8913121 is a wasteful number, since it uses less digits than its factorization.

8913121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 142 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 8913121 is about 2985.4850527176. The cubic root of 8913121 is about 207.3368999454.

The spelling of 8913121 in words is "eight million, nine hundred thirteen thousand, one hundred twenty-one".