13933871 has 4 divisors (see below), whose sum is σ = 15924432. Its totient is φ = 11943312.

The previous prime is 13933847. The next prime is 13933877. The reversal of 13933871 is 17833931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17833931 = 211 ⋅84521.

It is a cyclic number.

It is not a de Polignac number, because 13933871 - 2¹⁸ = 13671727 is a prime.

It is a super-2 number, since 2×13933871² = 388305522089282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13933877) 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, 995270 + ... + 995283.

It is an arithmetic number, because the mean of its divisors is an integer number (3981108).

Almost surely, 2^13933871 is an apocalyptic number.

13933871 is a deficient number, since it is larger than the sum of its proper divisors (1990561).

13933871 is an equidigital number, since it uses as much as digits as its factorization.

13933871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990560.

The product of its digits is 13608, while the sum is 35.

The square root of 13933871 is about 3732.8100674961. The cubic root of 13933871 is about 240.6341504588.

The spelling of 13933871 in words is "thirteen million, nine hundred thirty-three thousand, eight hundred seventy-one".