94908721 has 2 divisors, whose sum is σ = 94908722. Its totient is φ = 94908720.

The previous prime is 94908713. The next prime is 94908733. The reversal of 94908721 is 12780949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94789696 + 119025 = 9736^2 + 345^2 .

It is an emirp because it is prime and its reverse (12780949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94908721 - 2³ = 94908713 is a prime.

It is not a weakly prime, because it can be changed into another prime (94008721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47454360 + 47454361.

It is an arithmetic number, because the mean of its divisors is an integer number (47454361).

Almost surely, 2^94908721 is an apocalyptic number.

It is an amenable number.

94908721 is a deficient number, since it is larger than the sum of its proper divisors (1).

94908721 is an equidigital number, since it uses as much as digits as its factorization.

94908721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 94908721 is about 9742.1107055915. The cubic root of 94908721 is about 456.1440773438.

The spelling of 94908721 in words is "ninety-four million, nine hundred eight thousand, seven hundred twenty-one".