13440445 has 8 divisors (see below), whose sum is σ = 16148736. Its totient is φ = 10738896.

The previous prime is 13440437. The next prime is 13440461. The reversal of 13440445 is 54404431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13440445 - 2³ = 13440437 is a prime.

It is a Duffinian number.

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, 5484 + ... + 7546.

It is an arithmetic number, because the mean of its divisors is an integer number (2018592).

Almost surely, 2^13440445 is an apocalyptic number.

It is an amenable number.

13440445 is a deficient number, since it is larger than the sum of its proper divisors (2708291).

13440445 is a wasteful number, since it uses less digits than its factorization.

13440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371.

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

The square root of 13440445 is about 3666.1212473130. The cubic root of 13440445 is about 237.7595021344.

Adding to 13440445 its reverse (54404431), we get a palindrome (67844876).

The spelling of 13440445 in words is "thirteen million, four hundred forty thousand, four hundred forty-five".