13449745 has 8 divisors (see below), whose sum is σ = 16160616. Its totient is φ = 10745856.

The previous prime is 13449727. The next prime is 13449749. The reversal of 13449745 is 54794431.

It can be written as a sum of positive squares in 4 ways, for example, as 2005056 + 11444689 = 1416^2 + 3383^2 .

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 13449745 - 2⁷ = 13449617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13449749) 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 7 ways as a sum of consecutive naturals, for example, 4599 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (2020077).

Almost surely, 2^13449745 is an apocalyptic number.

It is an amenable number.

13449745 is a deficient number, since it is larger than the sum of its proper divisors (2710871).

13449745 is a wasteful number, since it uses less digits than its factorization.

13449745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491.

The product of its digits is 60480, while the sum is 37.

The square root of 13449745 is about 3667.3893984686. The cubic root of 13449745 is about 237.8143280366.

The spelling of 13449745 in words is "thirteen million, four hundred forty-nine thousand, seven hundred forty-five".