75434939 has 2 divisors, whose sum is σ = 75434940. Its totient is φ = 75434938.

The previous prime is 75434911. The next prime is 75434969. The reversal of 75434939 is 93943457.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75434939 - 2¹⁶ = 75369403 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75434939.

It is not a weakly prime, because it can be changed into another prime (75434969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37717469 + 37717470.

It is an arithmetic number, because the mean of its divisors is an integer number (37717470).

Almost surely, 2^75434939 is an apocalyptic number.

75434939 is a deficient number, since it is larger than the sum of its proper divisors (1).

75434939 is an equidigital number, since it uses as much as digits as its factorization.

75434939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 44.

The square root of 75434939 is about 8685.3289517439. The cubic root of 75434939 is about 422.5299657796.

The spelling of 75434939 in words is "seventy-five million, four hundred thirty-four thousand, nine hundred thirty-nine".