13443404 has 12 divisors (see below), whose sum is σ = 25335744. Its totient is φ = 6204624.

The previous prime is 13443389. The next prime is 13443407. The reversal of 13443404 is 40434431.

It is a super-2 number, since 2×13443404² = 361450222214432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13443404.

It is not an unprimeable number, because it can be changed into a prime (13443407) 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, 129212 + ... + 129315.

It is an arithmetic number, because the mean of its divisors is an integer number (2111312).

Almost surely, 2^13443404 is an apocalyptic number.

It is an amenable number.

13443404 is a deficient number, since it is larger than the sum of its proper divisors (11892340).

13443404 is a wasteful number, since it uses less digits than its factorization.

13443404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258544 (or 258542 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 13443404 is about 3666.5247851337. The cubic root of 13443404 is about 237.7769489462.

Adding to 13443404 its reverse (40434431), we get a palindrome (53877835).

The spelling of 13443404 in words is "thirteen million, four hundred forty-three thousand, four hundred four".