13740385 has 4 divisors (see below), whose sum is σ = 16488468. Its totient is φ = 10992304.

The previous prime is 13740383. The next prime is 13740413. The reversal of 13740385 is 58304731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2531281 + 11209104 = 1591^2 + 3348^2 .

It is a cyclic number.

It is not a de Polignac number, because 13740385 - 2¹ = 13740383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13740383) 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, 1374034 + ... + 1374043.

It is an arithmetic number, because the mean of its divisors is an integer number (4122117).

Almost surely, 2^13740385 is an apocalyptic number.

It is an amenable number.

13740385 is a deficient number, since it is larger than the sum of its proper divisors (2748083).

13740385 is an equidigital number, since it uses as much as digits as its factorization.

13740385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748082.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 13740385 is about 3706.8025304837. The cubic root of 13740385 is about 239.5151380113.

The spelling of 13740385 in words is "thirteen million, seven hundred forty thousand, three hundred eighty-five".