12883945 has 4 divisors (see below), whose sum is σ = 15460740. Its totient is φ = 10307152.

The previous prime is 12883931. The next prime is 12883951. The reversal of 12883945 is 54938821.

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 4293184 + 8590761 = 2072^2 + 2931^2 .

It is a cyclic number.

It is not a de Polignac number, because 12883945 - 2¹⁵ = 12851177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12883898 and 12883907.

It is an unprimeable number.

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, 1288390 + ... + 1288399.

It is an arithmetic number, because the mean of its divisors is an integer number (3865185).

Almost surely, 2^12883945 is an apocalyptic number.

It is an amenable number.

12883945 is a deficient number, since it is larger than the sum of its proper divisors (2576795).

12883945 is an equidigital number, since it uses as much as digits as its factorization.

12883945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576794.

The product of its digits is 69120, while the sum is 40.

The square root of 12883945 is about 3589.4212625436. The cubic root of 12883945 is about 234.4316732875.

The spelling of 12883945 in words is "twelve million, eight hundred eighty-three thousand, nine hundred forty-five".