13819444 has 6 divisors (see below), whose sum is σ = 24184034. Its totient is φ = 6909720.

The previous prime is 13819433. The next prime is 13819447. The reversal of 13819444 is 44491831.

It can be written as a sum of positive squares in only one way, i.e., 11478544 + 2340900 = 3388^2 + 1530^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13819447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1727427 + ... + 1727434.

Almost surely, 2^13819444 is an apocalyptic number.

It is an amenable number.

13819444 is a deficient number, since it is larger than the sum of its proper divisors (10364590).

13819444 is a wasteful number, since it uses less digits than its factorization.

13819444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3454865 (or 3454863 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 13819444 is about 3717.4512774211. The cubic root of 13819444 is about 239.9736313623.

The spelling of 13819444 in words is "thirteen million, eight hundred nineteen thousand, four hundred forty-four".