8893421 has 2 divisors, whose sum is σ = 8893422. Its totient is φ = 8893420.

The previous prime is 8893403. The next prime is 8893427. The reversal of 8893421 is 1243988.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5470921 + 3422500 = 2339^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 8893421 - 2¹⁸ = 8631277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8893427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4446710 + 4446711.

It is an arithmetic number, because the mean of its divisors is an integer number (4446711).

Almost surely, 2^8893421 is an apocalyptic number.

It is an amenable number.

8893421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8893421 is an equidigital number, since it uses as much as digits as its factorization.

8893421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 8893421 is about 2982.1839312826. The cubic root of 8893421 is about 207.1840335560.

The spelling of 8893421 in words is "eight million, eight hundred ninety-three thousand, four hundred twenty-one".