13849915 has 4 divisors (see below), whose sum is σ = 16619904. Its totient is φ = 11079928.

The previous prime is 13849909. The next prime is 13849921. The reversal of 13849915 is 51994831.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13849909) and next prime (13849921).

It is a cyclic number.

It is not a de Polignac number, because 13849915 - 2¹⁷ = 13718843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384987 + ... + 1384996.

It is an arithmetic number, because the mean of its divisors is an integer number (4154976).

Almost surely, 2^13849915 is an apocalyptic number.

13849915 is a deficient number, since it is larger than the sum of its proper divisors (2769989).

13849915 is an equidigital number, since it uses as much as digits as its factorization.

13849915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769988.

The product of its digits is 38880, while the sum is 40.

The square root of 13849915 is about 3721.5473932223. The cubic root of 13849915 is about 240.1498774485.

The spelling of 13849915 in words is "thirteen million, eight hundred forty-nine thousand, nine hundred fifteen".