8330421 has 32 divisors (see below), whose sum is σ = 12773376. Its totient is φ = 4784000.

The previous prime is 8330411. The next prime is 8330423. The reversal of 8330421 is 1240338.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8330421 - 2⁵ = 8330389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8330423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63526 + ... + 63656.

It is an arithmetic number, because the mean of its divisors is an integer number (399168).

Almost surely, 2^8330421 is an apocalyptic number.

It is an amenable number.

8330421 is a deficient number, since it is larger than the sum of its proper divisors (4442955).

8330421 is a wasteful number, since it uses less digits than its factorization.

8330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 8330421 is about 2886.2468709381. The cubic root of 8330421 is about 202.7164459011.

Adding to 8330421 its reverse (1240338), we get a palindrome (9570759).

The spelling of 8330421 in words is "eight million, three hundred thirty thousand, four hundred twenty-one".