13996009 has 4 divisors (see below), whose sum is σ = 14478660. Its totient is φ = 13513360.

The previous prime is 13995997. The next prime is 13996019. The reversal of 13996009 is 90069931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5856400 + 8139609 = 2420^2 + 2853^2 .

It is a cyclic number.

It is not a de Polignac number, because 13996009 - 2⁵ = 13995977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13996019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241282 + ... + 241339.

It is an arithmetic number, because the mean of its divisors is an integer number (3619665).

Almost surely, 2^13996009 is an apocalyptic number.

It is an amenable number.

13996009 is a deficient number, since it is larger than the sum of its proper divisors (482651).

13996009 is an equidigital number, since it uses as much as digits as its factorization.

13996009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482650.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 13996009 is about 3741.1240289517. The cubic root of 13996009 is about 240.9913221510.

The spelling of 13996009 in words is "thirteen million, nine hundred ninety-six thousand, nine".