12353945 has 4 divisors (see below), whose sum is σ = 14824740.
Its totient is φ = 9883152.
The previous prime is 12353927. The next prime is 12353947. The reversal of 12353945 is 54935321.
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 7722841 + 4631104 = 2779^2 + 2152^2
It is a cyclic number.
It is not a de Polignac number, because 12353945 - 26 = 12353881 is a prime.
It is not an unprimeable number, because it can be changed into a prime (12353947) 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 3 ways as a sum of consecutive naturals, for example, 1235390 + ... + 1235399.
It is an arithmetic number, because the mean of its divisors is an integer number (3706185).
Almost surely, 212353945 is an apocalyptic number.
It is an amenable number.
12353945 is a deficient number, since it is larger than the sum of its proper divisors (2470795).
12353945 is an equidigital number, since it uses as much as digits as its factorization.
12353945 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2470794.
The product of its digits is 16200, while the sum is 32.
The square root of 12353945 is about 3514.8179184703.
The cubic root of 12353945 is about 231.1719951173.
The spelling of 12353945 in words is "twelve million, three hundred fifty-three thousand, nine hundred forty-five".