801994444 has 6 divisors (see below), whose sum is σ = 1403490284. Its totient is φ = 400997220.

The previous prime is 801994441. The next prime is 801994451. The reversal of 801994444 is 444499108.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 801994444.

It is not an unprimeable number, because it can be changed into a prime (801994441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100249302 + ... + 100249309.

Almost surely, 2^801994444 is an apocalyptic number.

It is an amenable number.

801994444 is a deficient number, since it is larger than the sum of its proper divisors (601495840).

801994444 is a wasteful number, since it uses less digits than its factorization.

801994444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200498615 (or 200498613 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 801994444 is about 28319.5064222525. The cubic root of 801994444 is about 929.0885756040.

The spelling of 801994444 in words is "eight hundred one million, nine hundred ninety-four thousand, four hundred forty-four".