74423639408939 has 2 divisors, whose sum is σ = 74423639408940. Its totient is φ = 74423639408938.

The previous prime is 74423639408893. The next prime is 74423639408971. The reversal of 74423639408939 is 93980493632447.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74423639408939 is a prime.

It is not a weakly prime, because it can be changed into another prime (74423639408999) 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, 37211819704469 + 37211819704470.

It is an arithmetic number, because the mean of its divisors is an integer number (37211819704470).

Almost surely, 2^{74423639408939} is an apocalyptic number.

74423639408939 is a deficient number, since it is larger than the sum of its proper divisors (1).

74423639408939 is an equidigital number, since it uses as much as digits as its factorization.

74423639408939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846526464, while the sum is 71.

The spelling of 74423639408939 in words is "seventy-four trillion, four hundred twenty-three billion, six hundred thirty-nine million, four hundred eight thousand, nine hundred thirty-nine".