8881421 has 4 divisors (see below), whose sum is σ = 8921472. Its totient is φ = 8841372.

The previous prime is 8881403. The next prime is 8881501. The reversal of 8881421 is 1241888.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8881421 - 2⁶ = 8881357 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 (8881121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19691 + ... + 20136.

It is an arithmetic number, because the mean of its divisors is an integer number (2230368).

Almost surely, 2^8881421 is an apocalyptic number.

It is an amenable number.

8881421 is a deficient number, since it is larger than the sum of its proper divisors (40051).

8881421 is a wasteful number, since it uses less digits than its factorization.

8881421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40050.

The product of its digits is 4096, while the sum is 32.

The square root of 8881421 is about 2980.1713038012. The cubic root of 8881421 is about 207.0908063091.

The spelling of 8881421 in words is "eight million, eight hundred eighty-one thousand, four hundred twenty-one".