806098421 has 4 divisors (see below), whose sum is σ = 814408812. Its totient is φ = 797788032.

The previous prime is 806098409. The next prime is 806098453. The reversal of 806098421 is 124890608.

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 586317796 + 219780625 = 24214^2 + 14825^2 .

It is a cyclic number.

It is not a de Polignac number, because 806098421 - 2⁶ = 806098357 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 (806091421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4155050 + ... + 4155243.

It is an arithmetic number, because the mean of its divisors is an integer number (203602203).

Almost surely, 2^806098421 is an apocalyptic number.

It is an amenable number.

806098421 is a deficient number, since it is larger than the sum of its proper divisors (8310391).

806098421 is an equidigital number, since it uses as much as digits as its factorization.

806098421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8310390.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 806098421 is about 28391.8724461773. The cubic root of 806098421 is about 930.6706616535.

The spelling of 806098421 in words is "eight hundred six million, ninety-eight thousand, four hundred twenty-one".