43104444391 has 2 divisors, whose sum is σ = 43104444392. Its totient is φ = 43104444390.

The previous prime is 43104444389. The next prime is 43104444403. The reversal of 43104444391 is 19344440134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43104444391 - 2¹ = 43104444389 is a prime.

It is a super-2 number, since 2×43104444391² (a number of 22 digits) contains 22 as substring.

Together with 43104444389, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43104444391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43104454391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21552222195 + 21552222196.

It is an arithmetic number, because the mean of its divisors is an integer number (21552222196).

Almost surely, 2^43104444391 is an apocalyptic number.

43104444391 is a deficient number, since it is larger than the sum of its proper divisors (1).

43104444391 is an equidigital number, since it uses as much as digits as its factorization.

43104444391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 43104444391 in words is "forty-three billion, one hundred four million, four hundred forty-four thousand, three hundred ninety-one".