803991444 has 12 divisors (see below), whose sum is σ = 1875980064. Its totient is φ = 267997144.

The previous prime is 803991443. The next prime is 803991451. The reversal of 803991444 is 444199308.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 803991396 and 803991405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803991443) 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, 33499632 + ... + 33499655.

It is an arithmetic number, because the mean of its divisors is an integer number (156331672).

Almost surely, 2^803991444 is an apocalyptic number.

It is an amenable number.

803991444 is an abundant number, since it is smaller than the sum of its proper divisors (1071988620).

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

803991444 is a wasteful number, since it uses less digits than its factorization.

803991444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66999294 (or 66999292 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 803991444 is about 28354.7428836870. The cubic root of 803991444 is about 929.8590930003.

The spelling of 803991444 in words is "eight hundred three million, nine hundred ninety-one thousand, four hundred forty-four".