13649169 has 8 divisors (see below), whose sum is σ = 18826560. Its totient is φ = 8785616.

The previous prime is 13649159. The next prime is 13649183. The reversal of 13649169 is 96194631.

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

It is a cyclic number.

It is not a de Polignac number, because 13649169 - 2¹⁵ = 13616401 is a prime.

It is a super-2 number, since 2×13649169² = 372599628781122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13649159) 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, 78357 + ... + 78530.

It is an arithmetic number, because the mean of its divisors is an integer number (2353320).

Almost surely, 2^13649169 is an apocalyptic number.

It is an amenable number.

13649169 is a deficient number, since it is larger than the sum of its proper divisors (5177391).

13649169 is a wasteful number, since it uses less digits than its factorization.

13649169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156919.

The product of its digits is 34992, while the sum is 39.

The square root of 13649169 is about 3694.4781769554. The cubic root of 13649169 is about 238.9839511174.

The spelling of 13649169 in words is "thirteen million, six hundred forty-nine thousand, one hundred sixty-nine".