13404445 has 16 divisors (see below), whose sum is σ = 16606080. Its totient is φ = 10382400.

The previous prime is 13404427. The next prime is 13404451. The reversal of 13404445 is 54440431.

It is not a de Polignac number, because 13404445 - 2²¹ = 11307293 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21346 + ... + 21964.

It is an arithmetic number, because the mean of its divisors is an integer number (1037880).

Almost surely, 2^13404445 is an apocalyptic number.

It is an amenable number.

13404445 is a deficient number, since it is larger than the sum of its proper divisors (3201635).

13404445 is an equidigital number, since it uses as much as digits as its factorization.

13404445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 13404445 is about 3661.2081339361. The cubic root of 13404445 is about 237.5470340828.

Adding to 13404445 its reverse (54440431), we get a palindrome (67844876).

The spelling of 13404445 in words is "thirteen million, four hundred four thousand, four hundred forty-five".