43928441437 has 2 divisors, whose sum is σ = 43928441438. Its totient is φ = 43928441436.

The previous prime is 43928441429. The next prime is 43928441519. The reversal of 43928441437 is 73414482934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32623223161 + 11305218276 = 180619^2 + 106326^2 .

It is a cyclic number.

It is not a de Polignac number, because 43928441437 - 2³ = 43928441429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43928444437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21964220718 + 21964220719.

It is an arithmetic number, because the mean of its divisors is an integer number (21964220719).

Almost surely, 2^43928441437 is an apocalyptic number.

It is an amenable number.

43928441437 is a deficient number, since it is larger than the sum of its proper divisors (1).

43928441437 is an equidigital number, since it uses as much as digits as its factorization.

43928441437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 49.

The spelling of 43928441437 in words is "forty-three billion, nine hundred twenty-eight million, four hundred forty-one thousand, four hundred thirty-seven".