76443943 has 2 divisors, whose sum is σ = 76443944. Its totient is φ = 76443942.

The previous prime is 76443931. The next prime is 76443947. The reversal of 76443943 is 34934467.

It is a strong prime.

It is an emirp because it is prime and its reverse (34934467) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76443943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76443896 and 76443905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76443947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38221971 + 38221972.

It is an arithmetic number, because the mean of its divisors is an integer number (38221972).

Almost surely, 2^76443943 is an apocalyptic number.

76443943 is a deficient number, since it is larger than the sum of its proper divisors (1).

76443943 is an equidigital number, since it uses as much as digits as its factorization.

76443943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 40.

The square root of 76443943 is about 8743.2226896036. Note that the first 3 decimals coincide. The cubic root of 76443943 is about 424.4055227146.

The spelling of 76443943 in words is "seventy-six million, four hundred forty-three thousand, nine hundred forty-three".