8016421 has 4 divisors (see below), whose sum is σ = 9161632. Its totient is φ = 6871212.

The previous prime is 8016419. The next prime is 8016433. The reversal of 8016421 is 1246108.

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 8016421 - 2¹ = 8016419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8016392 and 8016401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8016221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572595 + ... + 572608.

It is an arithmetic number, because the mean of its divisors is an integer number (2290408).

Almost surely, 2^8016421 is an apocalyptic number.

It is an amenable number.

8016421 is a deficient number, since it is larger than the sum of its proper divisors (1145211).

8016421 is a wasteful number, since it uses less digits than its factorization.

8016421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145210.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 8016421 is about 2831.3284867708. The cubic root of 8016421 is about 200.1367481451.

The spelling of 8016421 in words is "eight million, sixteen thousand, four hundred twenty-one".