13672209 has 16 divisors (see below), whose sum is σ = 18998784. Its totient is φ = 8736000.

The previous prime is 13672193. The next prime is 13672213. The reversal of 13672209 is 90227631.

It is not a de Polignac number, because 13672209 - 2⁴ = 13672193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13674209) 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, 9859 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^13672209 is an apocalyptic number.

It is an amenable number.

13672209 is a deficient number, since it is larger than the sum of its proper divisors (5326575).

13672209 is a wasteful number, since it uses less digits than its factorization.

13672209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 13672209 is about 3697.5950292048. The cubic root of 13672209 is about 239.1183450125.

The spelling of 13672209 in words is "thirteen million, six hundred seventy-two thousand, two hundred nine".