13921445401 has 4 divisors (see below), whose sum is σ = 14740353972. Its totient is φ = 13102536832.

The previous prime is 13921445347. The next prime is 13921445411. The reversal of 13921445401 is 10454412931.

13921445401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4877625600 + 9043819801 = 69840^2 + 95099^2 .

It is a cyclic number.

It is not a de Polignac number, because 13921445401 - 2²⁷ = 13787227673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13921445411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409454260 + ... + 409454293.

It is an arithmetic number, because the mean of its divisors is an integer number (3685088493).

Almost surely, 2^13921445401 is an apocalyptic number.

It is an amenable number.

13921445401 is a deficient number, since it is larger than the sum of its proper divisors (818908571).

13921445401 is an equidigital number, since it uses as much as digits as its factorization.

13921445401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818908570.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 13921445401 in words is "thirteen billion, nine hundred twenty-one million, four hundred forty-five thousand, four hundred one".