13391873 has 4 divisors (see below), whose sum is σ = 14609328. Its totient is φ = 12174420.

The previous prime is 13391867. The next prime is 13391909. The reversal of 13391873 is 37819331.

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 13391873 - 2⁴ = 13391857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13391803) 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, 608711 + ... + 608732.

It is an arithmetic number, because the mean of its divisors is an integer number (3652332).

Almost surely, 2^13391873 is an apocalyptic number.

It is an amenable number.

13391873 is a deficient number, since it is larger than the sum of its proper divisors (1217455).

13391873 is a wasteful number, since it uses less digits than its factorization.

13391873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217454.

The product of its digits is 13608, while the sum is 35.

The square root of 13391873 is about 3659.4908115747. The cubic root of 13391873 is about 237.4727459031.

The spelling of 13391873 in words is "thirteen million, three hundred ninety-one thousand, eight hundred seventy-three".