13960004521 has 4 divisors (see below), whose sum is σ = 13963183812. Its totient is φ = 13956825232.

The previous prime is 13960004507. The next prime is 13960004533. The reversal of 13960004521 is 12540006931.

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 6014778025 + 7945226496 = 77555^2 + 89136^2 .

It is a cyclic number.

It is not a de Polignac number, because 13960004521 - 2¹¹ = 13960002473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13960004551) 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, 1583050 + ... + 1591843.

It is an arithmetic number, because the mean of its divisors is an integer number (3490795953).

Almost surely, 2^13960004521 is an apocalyptic number.

It is an amenable number.

13960004521 is a deficient number, since it is larger than the sum of its proper divisors (3179291).

13960004521 is an equidigital number, since it uses as much as digits as its factorization.

13960004521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179290.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 13960004521 in words is "thirteen billion, nine hundred sixty million, four thousand, five hundred twenty-one".