43423440001 has 2 divisors, whose sum is σ = 43423440002. Its totient is φ = 43423440000.

The previous prime is 43423439989. The next prime is 43423440007. The reversal of 43423440001 is 10004432434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42817541776 + 605898225 = 206924^2 + 24615^2 .

It is a cyclic number.

It is not a de Polignac number, because 43423440001 - 2¹³ = 43423431809 is a prime.

It is not a weakly prime, because it can be changed into another prime (43423440007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21711720000 + 21711720001.

It is an arithmetic number, because the mean of its divisors is an integer number (21711720001).

Almost surely, 2^43423440001 is an apocalyptic number.

It is an amenable number.

43423440001 is a deficient number, since it is larger than the sum of its proper divisors (1).

43423440001 is an equidigital number, since it uses as much as digits as its factorization.

43423440001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 43423440001 its reverse (10004432434), we get a palindrome (53427872435).

The spelling of 43423440001 in words is "forty-three billion, four hundred twenty-three million, four hundred forty thousand, one".