13444705 has 16 divisors (see below), whose sum is σ = 17369424. Its totient is φ = 9953280.

The previous prime is 13444663. The next prime is 13444721. The reversal of 13444705 is 50744431.

13444705 is a nontrivial binomial coefficient, being equal to C(5186, 2).

It can be written as a sum of positive squares in 8 ways, for example, as 398161 + 13046544 = 631^2 + 3612^2 .

It is not a de Polignac number, because 13444705 - 2¹¹ = 13442657 is a prime.

It is a Duffinian 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, 3889 + ... + 6481.

It is an arithmetic number, because the mean of its divisors is an integer number (1085589).

Almost surely, 2^13444705 is an apocalyptic number.

13444705 is the 5185-th triangular number and also the 2593-rd hexagonal number.

13444705 is the 1729-th centered nonagonal number.

It is an amenable number.

13444705 is a deficient number, since it is larger than the sum of its proper divisors (3924719).

13444705 is a wasteful number, since it uses less digits than its factorization.

13444705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 13444705 is about 3666.7021967976. The cubic root of 13444705 is about 237.7846190728.

The spelling of 13444705 in words is "thirteen million, four hundred forty-four thousand, seven hundred five".