13602009 has 8 divisors (see below), whose sum is σ = 18252160. Its totient is φ = 9009936.

The previous prime is 13601999. The next prime is 13602011. The reversal of 13602009 is 90020631.

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

It is not a de Polignac number, because 13602009 - 2¹⁶ = 13536473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13602059) 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, 13969 + ... + 14910.

It is an arithmetic number, because the mean of its divisors is an integer number (2281520).

Almost surely, 2^13602009 is an apocalyptic number.

It is an amenable number.

13602009 is a deficient number, since it is larger than the sum of its proper divisors (4650151).

13602009 is a wasteful number, since it uses less digits than its factorization.

13602009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29039.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13602009 is about 3688.0901561648. The cubic root of 13602009 is about 238.7083912760.

The spelling of 13602009 in words is "thirteen million, six hundred two thousand, nine".