12009355 has 4 divisors (see below), whose sum is σ = 14411232. Its totient is φ = 9607480.

The previous prime is 12009337. The next prime is 12009367. The reversal of 12009355 is 55390021.

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

It is not a de Polignac number, because 12009355 - 2¹³ = 12001163 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200931 + ... + 1200940.

It is an arithmetic number, because the mean of its divisors is an integer number (3602808).

Almost surely, 2^12009355 is an apocalyptic number.

12009355 is a deficient number, since it is larger than the sum of its proper divisors (2401877).

12009355 is an equidigital number, since it uses as much as digits as its factorization.

12009355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401876.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 12009355 is about 3465.4516300188. The cubic root of 12009355 is about 229.0023264003.

Adding to 12009355 its reverse (55390021), we get a palindrome (67399376).

The spelling of 12009355 in words is "twelve million, nine thousand, three hundred fifty-five".