13941805 has 8 divisors (see below), whose sum is σ = 16853112. Its totient is φ = 11071488.

The previous prime is 13941803. The next prime is 13941817. The reversal of 13941805 is 50814931.

It can be written as a sum of positive squares in 4 ways, for example, as 1225449 + 12716356 = 1107^2 + 3566^2 .

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 13941805 - 2¹ = 13941803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13941803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9492 + ... + 10861.

It is an arithmetic number, because the mean of its divisors is an integer number (2106639).

Almost surely, 2^13941805 is an apocalyptic number.

It is an amenable number.

13941805 is a deficient number, since it is larger than the sum of its proper divisors (2911307).

13941805 is a wasteful number, since it uses less digits than its factorization.

13941805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20495.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 13941805 is about 3733.8726544969. The cubic root of 13941805 is about 240.6798144646.

The spelling of 13941805 in words is "thirteen million, nine hundred forty-one thousand, eight hundred five".