13209995 has 8 divisors (see below), whose sum is σ = 16238880. Its totient is φ = 10310080.

The previous prime is 13209991. The next prime is 13210013. The reversal of 13209995 is 59990231.

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

It is not a de Polignac number, because 13209995 - 2² = 13209991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13209991) 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 7 ways as a sum of consecutive naturals, for example, 32015 + ... + 32424.

It is an arithmetic number, because the mean of its divisors is an integer number (2029860).

Almost surely, 2^13209995 is an apocalyptic number.

13209995 is a deficient number, since it is larger than the sum of its proper divisors (3028885).

13209995 is an equidigital number, since it uses as much as digits as its factorization.

13209995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64485.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 13209995 is about 3634.5556812353. Note that the first 3 decimals coincide. The cubic root of 13209995 is about 236.3927852925.

The spelling of 13209995 in words is "thirteen million, two hundred nine thousand, nine hundred ninety-five".