13641279 has 4 divisors (see below), whose sum is σ = 18188376. Its totient is φ = 9094184.

The previous prime is 13641269. The next prime is 13641283. The reversal of 13641279 is 97214631.

13641279 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.

It is a cyclic number.

It is not a de Polignac number, because 13641279 - 2⁴ = 13641263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13641239) 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, 2273544 + ... + 2273549.

It is an arithmetic number, because the mean of its divisors is an integer number (4547094).

Almost surely, 2^13641279 is an apocalyptic number.

13641279 is a deficient number, since it is larger than the sum of its proper divisors (4547097).

13641279 is an equidigital number, since it uses as much as digits as its factorization.

13641279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547096.

The product of its digits is 9072, while the sum is 33.

The square root of 13641279 is about 3693.4102127979. The cubic root of 13641279 is about 238.9378934461.

The spelling of 13641279 in words is "thirteen million, six hundred forty-one thousand, two hundred seventy-nine".