43648373 has 2 divisors, whose sum is σ = 43648374. Its totient is φ = 43648372.

The previous prime is 43648361. The next prime is 43648387. The reversal of 43648373 is 37384634.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32512804 + 11135569 = 5702^2 + 3337^2 .

It is a cyclic number.

It is not a de Polignac number, because 43648373 - 2⁴ = 43648357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43648343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21824186 + 21824187.

It is an arithmetic number, because the mean of its divisors is an integer number (21824187).

Almost surely, 2^43648373 is an apocalyptic number.

It is an amenable number.

43648373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43648373 is an equidigital number, since it uses as much as digits as its factorization.

43648373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 38.

The square root of 43648373 is about 6606.6915320756. The cubic root of 43648373 is about 352.0918885666.

The spelling of 43648373 in words is "forty-three million, six hundred forty-eight thousand, three hundred seventy-three".