13873871 has 4 divisors (see below), whose sum is σ = 15135144. Its totient is φ = 12612600.

The previous prime is 13873829. The next prime is 13873877. The reversal of 13873871 is 17837831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17837831 = 11 ⋅1621621.

It is a de Polignac number, because none of the positive numbers 2^k-13873871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13873877) 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, 630620 + ... + 630641.

It is an arithmetic number, because the mean of its divisors is an integer number (3783786).

Almost surely, 2^13873871 is an apocalyptic number.

13873871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13873871 is a deficient number, since it is larger than the sum of its proper divisors (1261273).

13873871 is a wasteful number, since it uses less digits than its factorization.

13873871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261272.

The product of its digits is 28224, while the sum is 38.

The square root of 13873871 is about 3724.7645563176. The cubic root of 13873871 is about 240.2882589637.

The spelling of 13873871 in words is "thirteen million, eight hundred seventy-three thousand, eight hundred seventy-one".