13941813 has 4 divisors (see below), whose sum is σ = 18589088. Its totient is φ = 9294540.

The previous prime is 13941803. The next prime is 13941817. The reversal of 13941813 is 31814931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13941813 - 2⁴ = 13941797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13941817) 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 3 ways as a sum of consecutive naturals, for example, 2323633 + ... + 2323638.

It is an arithmetic number, because the mean of its divisors is an integer number (4647272).

Almost surely, 2^13941813 is an apocalyptic number.

It is an amenable number.

13941813 is a deficient number, since it is larger than the sum of its proper divisors (4647275).

13941813 is an equidigital number, since it uses as much as digits as its factorization.

13941813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647274.

The product of its digits is 2592, while the sum is 30.

The square root of 13941813 is about 3733.8737257706. The cubic root of 13941813 is about 240.6798604997.

The spelling of 13941813 in words is "thirteen million, nine hundred forty-one thousand, eight hundred thirteen".