8334821 has 4 divisors (see below), whose sum is σ = 9092544. Its totient is φ = 7577100.

The previous prime is 8334791. The next prime is 8334829. The reversal of 8334821 is 1284338.

It is a happy number.

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 8334821 - 2⁶ = 8334757 is a prime.

It is a super-2 number, since 2×8334821² = 138938482204082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8334829) 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, 378845 + ... + 378866.

It is an arithmetic number, because the mean of its divisors is an integer number (2273136).

Almost surely, 2^8334821 is an apocalyptic number.

It is an amenable number.

8334821 is a deficient number, since it is larger than the sum of its proper divisors (757723).

8334821 is a wasteful number, since it uses less digits than its factorization.

8334821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757722.

The product of its digits is 4608, while the sum is 29.

The square root of 8334821 is about 2887.0090058744. The cubic root of 8334821 is about 202.7521301868.

The spelling of 8334821 in words is "eight million, three hundred thirty-four thousand, eight hundred twenty-one".