13873873 has 4 divisors (see below), whose sum is σ = 14941108. Its totient is φ = 12806640.

The previous prime is 13873829. The next prime is 13873877. The reversal of 13873873 is 37837831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37837831 = 3079 ⋅12289.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 10804369 = 1752^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 13873873 - 2⁹ = 13873361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13873877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533598 + ... + 533623.

It is an arithmetic number, because the mean of its divisors is an integer number (3735277).

Almost surely, 2^13873873 is an apocalyptic number.

13873873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13873873 is a deficient number, since it is larger than the sum of its proper divisors (1067235).

13873873 is a wasteful number, since it uses less digits than its factorization.

13873873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067234.

The product of its digits is 84672, while the sum is 40.

The square root of 13873873 is about 3724.7648247910. The cubic root of 13873873 is about 240.2882705100.

The spelling of 13873873 in words is "thirteen million, eight hundred seventy-three thousand, eight hundred seventy-three".