13209158 has 4 divisors (see below), whose sum is σ = 19813740. Its totient is φ = 6604578.

The previous prime is 13209151. The next prime is 13209167. The reversal of 13209158 is 85190231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85190231 = 7 ⋅12170033.

It is a self number, because there is not a number n which added to its sum of digits gives 13209158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13209151) 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 as a sum of consecutive naturals, namely, 3302288 + ... + 3302291.

It is an arithmetic number, because the mean of its divisors is an integer number (4953435).

Almost surely, 2^13209158 is an apocalyptic number.

13209158 is a deficient number, since it is larger than the sum of its proper divisors (6604582).

13209158 is an equidigital number, since it uses as much as digits as its factorization.

13209158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604581.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 13209158 is about 3634.4405346628. The cubic root of 13209158 is about 236.3877924837.

Adding to 13209158 its reverse (85190231), we get a palindrome (98399389).

The spelling of 13209158 in words is "thirteen million, two hundred nine thousand, one hundred fifty-eight".