13891265 has 8 divisors (see below), whose sum is σ = 16744320. Its totient is φ = 11063152.

The previous prime is 13891259. The next prime is 13891271. The reversal of 13891265 is 56219831.

It is an interprime number because it is at equal distance from previous prime (13891259) and next prime (13891271).

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

It is a cyclic number.

It is not a de Polignac number, because 13891265 - 2⁴ = 13891249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4985 + ... + 7254.

It is an arithmetic number, because the mean of its divisors is an integer number (2093040).

Almost surely, 2^13891265 is an apocalyptic number.

It is an amenable number.

13891265 is a deficient number, since it is larger than the sum of its proper divisors (2853055).

13891265 is a wasteful number, since it uses less digits than its factorization.

13891265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471.

The product of its digits is 12960, while the sum is 35.

The square root of 13891265 is about 3727.0987376242. The cubic root of 13891265 is about 240.3886353838.

The spelling of 13891265 in words is "thirteen million, eight hundred ninety-one thousand, two hundred sixty-five".