13404444 has 24 divisors (see below), whose sum is σ = 31519488. Its totient is φ = 4433520.

The previous prime is 13404427. The next prime is 13404451. The reversal of 13404444 is 44440431.

13404444 is a modest number, since divided by 4444 gives 1340 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2692 + ... + 5835.

It is an arithmetic number, because the mean of its divisors is an integer number (1313312).

Almost surely, 2^13404444 is an apocalyptic number.

It is an amenable number.

13404444 is an abundant number, since it is smaller than the sum of its proper divisors (18115044).

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

13404444 is a wasteful number, since it uses less digits than its factorization.

13404444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8665 (or 8663 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 13404444 is about 3661.2079973692. The cubic root of 13404444 is about 237.5470281756.

Adding to 13404444 its reverse (44440431), we get a palindrome (57844875).

The spelling of 13404444 in words is "thirteen million, four hundred four thousand, four hundred forty-four".