13891427 has 8 divisors (see below), whose sum is σ = 15197232. Its totient is φ = 12592800.

The previous prime is 13891399. The next prime is 13891433. The reversal of 13891427 is 72419831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13891427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13891457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2777 + ... + 5957.

It is an arithmetic number, because the mean of its divisors is an integer number (1899654).

Almost surely, 2^13891427 is an apocalyptic number.

13891427 is a deficient number, since it is larger than the sum of its proper divisors (1305805).

13891427 is a wasteful number, since it uses less digits than its factorization.

13891427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589.

The product of its digits is 12096, while the sum is 35.

The square root of 13891427 is about 3727.1204702827. The cubic root of 13891427 is about 240.3895698514.

The spelling of 13891427 in words is "thirteen million, eight hundred ninety-one thousand, four hundred twenty-seven".