839808001 has 4 divisors (see below), whose sum is σ = 839937604. Its totient is φ = 839678400.

The previous prime is 839807989. The next prime is 839808019. The reversal of 839808001 is 100808938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100808938 = 2 ⋅50404469.

It can be written as a sum of positive squares in 2 ways, for example, as 407999601 + 431808400 = 20199^2 + 20780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-839808001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (839808061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54540 + ... + 68221.

It is an arithmetic number, because the mean of its divisors is an integer number (209984401).

Almost surely, 2^839808001 is an apocalyptic number.

It is an amenable number.

839808001 is a deficient number, since it is larger than the sum of its proper divisors (129603).

839808001 is a wasteful number, since it uses less digits than its factorization.

839808001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129602.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 839808001 is about 28979.4410056509. The cubic root of 839808001 is about 943.4669022897.

The spelling of 839808001 in words is "eight hundred thirty-nine million, eight hundred eight thousand, one".