13933861 has 4 divisors (see below), whose sum is σ = 14064192. Its totient is φ = 13803532.

The previous prime is 13933847. The next prime is 13933877. The reversal of 13933861 is 16833931.

13933861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16833931 = 607 ⋅27733.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13933861 is a prime.

It is a super-3 number, since 3×13933861³ (a number of 22 digits) contains 333 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 (13933811) 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, 65005 + ... + 65218.

It is an arithmetic number, because the mean of its divisors is an integer number (3516048).

Almost surely, 2^13933861 is an apocalyptic number.

It is an amenable number.

13933861 is a deficient number, since it is larger than the sum of its proper divisors (130331).

13933861 is a wasteful number, since it uses less digits than its factorization.

13933861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130330.

The product of its digits is 11664, while the sum is 34.

The square root of 13933861 is about 3732.8087280224. The cubic root of 13933861 is about 240.6340928930.

The spelling of 13933861 in words is "thirteen million, nine hundred thirty-three thousand, eight hundred sixty-one".