13938761 has 4 divisors (see below), whose sum is σ = 14672400. Its totient is φ = 13205124.

The previous prime is 13938739. The next prime is 13938779. The reversal of 13938761 is 16783931.

13938761 is digitally balanced in base 3, 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: 16783931 = 881 ⋅19051.

It is a cyclic number.

It is not a de Polignac number, because 13938761 - 2⁶ = 13938697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13938731) 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, 366791 + ... + 366828.

It is an arithmetic number, because the mean of its divisors is an integer number (3668100).

Almost surely, 2^13938761 is an apocalyptic number.

It is an amenable number.

13938761 is a deficient number, since it is larger than the sum of its proper divisors (733639).

13938761 is an equidigital number, since it uses as much as digits as its factorization.

13938761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733638.

The product of its digits is 27216, while the sum is 38.

The square root of 13938761 is about 3733.4650125587. The cubic root of 13938761 is about 240.6622968217.

The spelling of 13938761 in words is "thirteen million, nine hundred thirty-eight thousand, seven hundred sixty-one".