43402344433939 has 2 divisors, whose sum is σ = 43402344433940. Its totient is φ = 43402344433938.

The previous prime is 43402344433907. The next prime is 43402344433957. The reversal of 43402344433939 is 93933444320434.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43402344433939 - 2⁵ = 43402344433907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43402344433939.

It is not a weakly prime, because it can be changed into another prime (43402344433979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21701172216969 + 21701172216970.

It is an arithmetic number, because the mean of its divisors is an integer number (21701172216970).

Almost surely, 2^{43402344433939} is an apocalyptic number.

43402344433939 is a deficient number, since it is larger than the sum of its proper divisors (1).

43402344433939 is an equidigital number, since it uses as much as digits as its factorization.

43402344433939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40310784, while the sum is 55.

The spelling of 43402344433939 in words is "forty-three trillion, four hundred two billion, three hundred forty-four million, four hundred thirty-three thousand, nine hundred thirty-nine".