806820393 has 8 divisors (see below), whose sum is σ = 1079645248. Its totient is φ = 535937904.

The previous prime is 806820379. The next prime is 806820401. The reversal of 806820393 is 393028608.

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

It is not a de Polignac number, because 806820393 - 2²⁹ = 269949481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806820193) 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, 484621 + ... + 486282.

It is an arithmetic number, because the mean of its divisors is an integer number (134955656).

Almost surely, 2^806820393 is an apocalyptic number.

It is an amenable number.

806820393 is a deficient number, since it is larger than the sum of its proper divisors (272824855).

806820393 is a wasteful number, since it uses less digits than its factorization.

806820393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971183.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 806820393 is about 28404.5840138524. The cubic root of 806820393 is about 930.9484266025.

The spelling of 806820393 in words is "eight hundred six million, eight hundred twenty thousand, three hundred ninety-three".