12403355 has 4 divisors (see below), whose sum is σ = 14884032. Its totient is φ = 9922680.

The previous prime is 12403351. The next prime is 12403381. The reversal of 12403355 is 55330421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55330421 = 47 ⋅1177243.

It is not a de Polignac number, because 12403355 - 2² = 12403351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12403355.

It is not an unprimeable number, because it can be changed into a prime (12403351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240331 + ... + 1240340.

It is an arithmetic number, because the mean of its divisors is an integer number (3721008).

Almost surely, 2^12403355 is an apocalyptic number.

12403355 is a deficient number, since it is larger than the sum of its proper divisors (2480677).

12403355 is an equidigital number, since it uses as much as digits as its factorization.

12403355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480676.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 12403355 is about 3521.8397181019. The cubic root of 12403355 is about 231.4797784258.

Adding to 12403355 its reverse (55330421), we get a palindrome (67733776).

The spelling of 12403355 in words is "twelve million, four hundred three thousand, three hundred fifty-five".