99430073 has 2 divisors, whose sum is σ = 99430074. Its totient is φ = 99430072.

The previous prime is 99430049. The next prime is 99430087. The reversal of 99430073 is 37003499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98148649 + 1281424 = 9907^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 99430073 - 2¹⁴ = 99413689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99430013) 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, 49715036 + 49715037.

It is an arithmetic number, because the mean of its divisors is an integer number (49715037).

Almost surely, 2^99430073 is an apocalyptic number.

It is an amenable number.

99430073 is a deficient number, since it is larger than the sum of its proper divisors (1).

99430073 is an equidigital number, since it uses as much as digits as its factorization.

99430073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 99430073 is about 9971.4629317869. The cubic root of 99430073 is about 463.2754139195.

The spelling of 99430073 in words is "ninety-nine million, four hundred thirty thousand, seventy-three".