94771993 has 2 divisors, whose sum is σ = 94771994. Its totient is φ = 94771992.

The previous prime is 94771987. The next prime is 94772011. The reversal of 94771993 is 39917749.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92775424 + 1996569 = 9632^2 + 1413^2 .

It is an emirp because it is prime and its reverse (39917749) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94771993 is a prime.

It is not a weakly prime, because it can be changed into another prime (94771793) 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, 47385996 + 47385997.

It is an arithmetic number, because the mean of its divisors is an integer number (47385997).

Almost surely, 2^94771993 is an apocalyptic number.

It is an amenable number.

94771993 is a deficient number, since it is larger than the sum of its proper divisors (1).

94771993 is an equidigital number, since it uses as much as digits as its factorization.

94771993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 49.

The square root of 94771993 is about 9735.0908059453. The cubic root of 94771993 is about 455.9249276870.

The spelling of 94771993 in words is "ninety-four million, seven hundred seventy-one thousand, nine hundred ninety-three".