13644969 has 8 divisors (see below), whose sum is σ = 19592832. Its totient is φ = 8396880.

The previous prime is 13644937. The next prime is 13644979. The reversal of 13644969 is 96944631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13644969 - 2⁵ = 13644937 is a prime.

It is a super-2 number, since 2×13644969² = 372370358021922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13644969.

It is not an unprimeable number, because it can be changed into a prime (13644979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174897 + ... + 174974.

It is an arithmetic number, because the mean of its divisors is an integer number (2449104).

Almost surely, 2^13644969 is an apocalyptic number.

It is an amenable number.

13644969 is a deficient number, since it is larger than the sum of its proper divisors (5947863).

13644969 is a wasteful number, since it uses less digits than its factorization.

13644969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349887.

The product of its digits is 139968, while the sum is 42.

The square root of 13644969 is about 3693.9097173591. The cubic root of 13644969 is about 238.9594359359.

The spelling of 13644969 in words is "thirteen million, six hundred forty-four thousand, nine hundred sixty-nine".