13948403591 has 4 divisors (see below), whose sum is σ = 13948962000. Its totient is φ = 13947845184.

The previous prime is 13948403561. The next prime is 13948403653. The reversal of 13948403591 is 19530484931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19530484931 = 41 ⋅476353291.

It is a cyclic number.

It is not a de Polignac number, because 13948403591 - 2¹⁴ = 13948387207 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 (13948403551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239891 + ... + 292308.

It is an arithmetic number, because the mean of its divisors is an integer number (3487240500).

Almost surely, 2^13948403591 is an apocalyptic number.

13948403591 is a deficient number, since it is larger than the sum of its proper divisors (558409).

13948403591 is an equidigital number, since it uses as much as digits as its factorization.

13948403591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558408.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 13948403591 in words is "thirteen billion, nine hundred forty-eight million, four hundred three thousand, five hundred ninety-one".