13923871 has 4 divisors (see below), whose sum is σ = 14994952. Its totient is φ = 12852792.

The previous prime is 13923863. The next prime is 13923893. The reversal of 13923871 is 17832931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17832931 = 3359 ⋅5309.

It is a cyclic number.

It is not a de Polignac number, because 13923871 - 2³ = 13923863 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 (13923821) 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, 535521 + ... + 535546.

It is an arithmetic number, because the mean of its divisors is an integer number (3748738).

Almost surely, 2^13923871 is an apocalyptic number.

13923871 is a deficient number, since it is larger than the sum of its proper divisors (1071081).

13923871 is a wasteful number, since it uses less digits than its factorization.

13923871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071080.

The product of its digits is 9072, while the sum is 34.

The square root of 13923871 is about 3731.4703536274. The cubic root of 13923871 is about 240.5765709249.

The spelling of 13923871 in words is "thirteen million, nine hundred twenty-three thousand, eight hundred seventy-one".