12013963 has 4 divisors (see below), whose sum is σ = 12938128. Its totient is φ = 11089800.

The previous prime is 12013949. The next prime is 12013973. The reversal of 12013963 is 36931021.

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

It is a cyclic number.

It is not a de Polignac number, because 12013963 - 2⁵ = 12013931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013973) 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, 462063 + ... + 462088.

It is an arithmetic number, because the mean of its divisors is an integer number (3234532).

Almost surely, 2^12013963 is an apocalyptic number.

12013963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12013963 is a deficient number, since it is larger than the sum of its proper divisors (924165).

12013963 is an equidigital number, since it uses as much as digits as its factorization.

12013963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924164.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 12013963 is about 3466.1164146635. The cubic root of 12013963 is about 229.0316121192.

Adding to 12013963 its reverse (36931021), we get a palindrome (48944984).

The spelling of 12013963 in words is "twelve million, thirteen thousand, nine hundred sixty-three".