13919473 has 4 divisors (see below), whose sum is σ = 14215680. Its totient is φ = 13623268.

The previous prime is 13919471. The next prime is 13919491. The reversal of 13919473 is 37491931.

13919473 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13919473 - 2¹ = 13919471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13919471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148033 + ... + 148126.

It is an arithmetic number, because the mean of its divisors is an integer number (3553920).

Almost surely, 2^13919473 is an apocalyptic number.

It is an amenable number.

13919473 is a deficient number, since it is larger than the sum of its proper divisors (296207).

13919473 is an equidigital number, since it uses as much as digits as its factorization.

13919473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296206.

The product of its digits is 20412, while the sum is 37.

The square root of 13919473 is about 3730.8809951538. The cubic root of 13919473 is about 240.5512387172.

The spelling of 13919473 in words is "thirteen million, nine hundred nineteen thousand, four hundred seventy-three".