13644379 has 16 divisors (see below), whose sum is σ = 16172800. Its totient is φ = 11267424.

The previous prime is 13644361. The next prime is 13644383. The reversal of 13644379 is 97344631.

13644379 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13644379 - 2⁵ = 13644347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (13644329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35812 + ... + 36190.

It is an arithmetic number, because the mean of its divisors is an integer number (1010800).

Almost surely, 2^13644379 is an apocalyptic number.

13644379 is a deficient number, since it is larger than the sum of its proper divisors (2528421).

13644379 is a wasteful number, since it uses less digits than its factorization.

13644379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 54432, while the sum is 37.

The square root of 13644379 is about 3693.8298553128. The cubic root of 13644379 is about 238.9559917336.

It can be divided in two parts, 13644 and 379, that multiplied together give a square (5171076 = 2274²).

The spelling of 13644379 in words is "thirteen million, six hundred forty-four thousand, three hundred seventy-nine".