806389444 has 24 divisors (see below), whose sum is σ = 1613826368. Its totient is φ = 345371040.

The previous prime is 806389429. The next prime is 806389447. The reversal of 806389444 is 444983608.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 806389394 and 806389403.

It is not an unprimeable number, because it can be changed into a prime (806389447) 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, 38899 + ... + 55909.

Almost surely, 2^806389444 is an apocalyptic number.

It is an amenable number.

806389444 is an abundant number, since it is smaller than the sum of its proper divisors (807436924).

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

806389444 is a wasteful number, since it uses less digits than its factorization.

806389444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18715 (or 18713 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 806389444 is about 28396.9970947634. The cubic root of 806389444 is about 930.7826471436.

The spelling of 806389444 in words is "eight hundred six million, three hundred eighty-nine thousand, four hundred forty-four".