801091444 has 12 divisors (see below), whose sum is σ = 1402420068. Its totient is φ = 400400000.

The previous prime is 801091441. The next prime is 801091457. The reversal of 801091444 is 444190108.

It can be written as a sum of positive squares in 2 ways, for example, as 582643044 + 218448400 = 24138^2 + 14780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801091441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23557 + ... + 46444.

It is an arithmetic number, because the mean of its divisors is an integer number (116868339).

Almost surely, 2^801091444 is an apocalyptic number.

It is an amenable number.

801091444 is a deficient number, since it is larger than the sum of its proper divisors (601328624).

801091444 is a wasteful number, since it uses less digits than its factorization.

801091444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72866 (or 72864 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 801091444 is about 28303.5588575006. The cubic root of 801091444 is about 928.7397444022.

The spelling of 801091444 in words is "eight hundred one million, ninety-one thousand, four hundred forty-four".