13442009 has 8 divisors (see below), whose sum is σ = 15592128. Its totient is φ = 11349360.

The previous prime is 13441963. The next prime is 13442017. The reversal of 13442009 is 90024431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13442009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13442069) 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, 13862 + ... + 14799.

It is an arithmetic number, because the mean of its divisors is an integer number (1949016).

Almost surely, 2^13442009 is an apocalyptic number.

It is an amenable number.

13442009 is a deficient number, since it is larger than the sum of its proper divisors (2150119).

13442009 is an equidigital number, since it uses as much as digits as its factorization.

13442009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28735.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13442009 is about 3666.3345455645. The cubic root of 13442009 is about 237.7687240870.

The spelling of 13442009 in words is "thirteen million, four hundred forty-two thousand, nine".