8468021 has 4 divisors (see below), whose sum is σ = 8495052. Its totient is φ = 8440992.

The previous prime is 8468011. The next prime is 8468041. The reversal of 8468021 is 1208648.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4622500 + 3845521 = 2150^2 + 1961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8468021 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 (8468011) 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, 13040 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (2123763).

Almost surely, 2^8468021 is an apocalyptic number.

It is an amenable number.

8468021 is a deficient number, since it is larger than the sum of its proper divisors (27031).

8468021 is a wasteful number, since it uses less digits than its factorization.

8468021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27030.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 8468021 is about 2909.9864260852. The cubic root of 8468021 is about 203.8264976784.

The spelling of 8468021 in words is "eight million, four hundred sixty-eight thousand, twenty-one".