43648445 has 4 divisors (see below), whose sum is σ = 52378140. Its totient is φ = 34918752.

The previous prime is 43648441. The next prime is 43648447. The reversal of 43648445 is 54484634.

43648445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 26822041 + 16826404 = 5179^2 + 4102^2 .

It is a cyclic number.

It is not a de Polignac number, because 43648445 - 2² = 43648441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43648399 and 43648408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43648441) 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, 4364840 + ... + 4364849.

It is an arithmetic number, because the mean of its divisors is an integer number (13094535).

Almost surely, 2^43648445 is an apocalyptic number.

It is an amenable number.

43648445 is a deficient number, since it is larger than the sum of its proper divisors (8729695).

43648445 is an equidigital number, since it uses as much as digits as its factorization.

43648445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8729694.

The product of its digits is 184320, while the sum is 38.

The square root of 43648445 is about 6606.6969810943. The cubic root of 43648445 is about 352.0920821638.

The spelling of 43648445 in words is "forty-three million, six hundred forty-eight thousand, four hundred forty-five".