839894020 has 48 divisors (see below), whose sum is σ = 2064924288. Its totient is φ = 280938240.

The previous prime is 839894009. The next prime is 839894023. The reversal of 839894020 is 20498938.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (839894023) 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 15 ways as a sum of consecutive naturals, for example, 67422 + ... + 78901.

It is an arithmetic number, because the mean of its divisors is an integer number (43019256).

Almost surely, 2^839894020 is an apocalyptic number.

It is an amenable number.

839894020 is an abundant number, since it is smaller than the sum of its proper divisors (1225030268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

839894020 is a wasteful number, since it uses less digits than its factorization.

839894020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146380 (or 146378 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 839894020 is about 28980.9251060072. The cubic root of 839894020 is about 943.4991133461.

The spelling of 839894020 in words is "eight hundred thirty-nine million, eight hundred ninety-four thousand, twenty".