8912421 has 24 divisors (see below), whose sum is σ = 14798784. Its totient is φ = 5063040.

The previous prime is 8912411. The next prime is 8912447. The reversal of 8912421 is 1242198.

It is not a de Polignac number, because 8912421 - 2⁵ = 8912389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8912401) 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, 14890 + ... + 15476.

It is an arithmetic number, because the mean of its divisors is an integer number (616616).

Almost surely, 2^8912421 is an apocalyptic number.

It is an amenable number.

8912421 is a deficient number, since it is larger than the sum of its proper divisors (5886363).

8912421 is a wasteful number, since it uses less digits than its factorization.

8912421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 838 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 8912421 is about 2985.3678165345. The cubic root of 8912421 is about 207.3314720065.

The spelling of 8912421 in words is "eight million, nine hundred twelve thousand, four hundred twenty-one".