75889393 has 2 divisors, whose sum is σ = 75889394. Its totient is φ = 75889392.

The previous prime is 75889357. The next prime is 75889403. The reversal of 75889393 is 39398857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38837824 + 37051569 = 6232^2 + 6087^2 .

It is an emirp because it is prime and its reverse (39398857) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75889393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75889393.

It is not a weakly prime, because it can be changed into another prime (75889313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37944696 + 37944697.

It is an arithmetic number, because the mean of its divisors is an integer number (37944697).

Almost surely, 2^75889393 is an apocalyptic number.

It is an amenable number.

75889393 is a deficient number, since it is larger than the sum of its proper divisors (1).

75889393 is an equidigital number, since it uses as much as digits as its factorization.

75889393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 75889393 is about 8711.4518307800. The cubic root of 75889393 is about 423.3767710541.

The spelling of 75889393 in words is "seventy-five million, eight hundred eighty-nine thousand, three hundred ninety-three".