13404455 has 4 divisors (see below), whose sum is σ = 16085352. Its totient is φ = 10723560.

The previous prime is 13404451. The next prime is 13404509. The reversal of 13404455 is 55440431.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13404455 - 2² = 13404451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340441 + ... + 1340450.

It is an arithmetic number, because the mean of its divisors is an integer number (4021338).

Almost surely, 2^13404455 is an apocalyptic number.

13404455 is a deficient number, since it is larger than the sum of its proper divisors (2680897).

13404455 is an equidigital number, since it uses as much as digits as its factorization.

13404455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680896.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 13404455 is about 3661.2094996053. The cubic root of 13404455 is about 237.5470931545.

Adding to 13404455 its reverse (55440431), we get a palindrome (68844886).

The spelling of 13404455 in words is "thirteen million, four hundred four thousand, four hundred fifty-five".