13921941 has 16 divisors (see below), whose sum is σ = 20455488. Its totient is φ = 8352000.

The previous prime is 13921937. The next prime is 13921949. The reversal of 13921941 is 14912931.

It is not a de Polignac number, because 13921941 - 2² = 13921937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13921899 and 13921908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921949) 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 15 ways as a sum of consecutive naturals, for example, 1245 + ... + 5421.

It is an arithmetic number, because the mean of its divisors is an integer number (1278468).

Almost surely, 2^13921941 is an apocalyptic number.

13921941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13921941 is a deficient number, since it is larger than the sum of its proper divisors (6533547).

13921941 is a wasteful number, since it uses less digits than its factorization.

13921941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292.

The product of its digits is 1944, while the sum is 30.

The square root of 13921941 is about 3731.2117334721. The cubic root of 13921941 is about 240.5654549013.

It can be divided in two parts, 1392 and 1941, that added together give a palindrome (3333).

The spelling of 13921941 in words is "thirteen million, nine hundred twenty-one thousand, nine hundred forty-one".