808092421 has 4 divisors (see below), whose sum is σ = 826885312. Its totient is φ = 789299532.

The previous prime is 808092391. The next prime is 808092443. The reversal of 808092421 is 124290808.

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 808092421 - 2²¹ = 805995269 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 (808002421) 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, 9396381 + ... + 9396466.

It is an arithmetic number, because the mean of its divisors is an integer number (206721328).

Almost surely, 2^808092421 is an apocalyptic number.

It is an amenable number.

808092421 is a deficient number, since it is larger than the sum of its proper divisors (18792891).

808092421 is a wasteful number, since it uses less digits than its factorization.

808092421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18792890.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 808092421 is about 28426.9664403362. The cubic root of 808092421 is about 931.4374122098.

The spelling of 808092421 in words is "eight hundred eight million, ninety-two thousand, four hundred twenty-one".