808214021 has 8 divisors (see below), whose sum is σ = 853873920. Its totient is φ = 763740208.

The previous prime is 808213993. The next prime is 808214027. The reversal of 808214021 is 120412808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808214021 is a prime.

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 (808214027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295121 + ... + 297846.

It is an arithmetic number, because the mean of its divisors is an integer number (106734240).

Almost surely, 2^808214021 is an apocalyptic number.

It is an amenable number.

808214021 is a deficient number, since it is larger than the sum of its proper divisors (45659899).

808214021 is a wasteful number, since it uses less digits than its factorization.

808214021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593043.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 808214021 is about 28429.1051740993. The cubic root of 808214021 is about 931.4841300957.

Adding to 808214021 its reverse (120412808), we get a palindrome (928626829).

The spelling of 808214021 in words is "eight hundred eight million, two hundred fourteen thousand, twenty-one".