99399973 has 2 divisors, whose sum is σ = 99399974. Its totient is φ = 99399972.

The previous prime is 99399967. The next prime is 99399983. The reversal of 99399973 is 37999399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82573569 + 16826404 = 9087^2 + 4102^2 .

It is an emirp because it is prime and its reverse (37999399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99399973 - 2⁵ = 99399941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99399943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49699986 + 49699987.

It is an arithmetic number, because the mean of its divisors is an integer number (49699987).

Almost surely, 2^99399973 is an apocalyptic number.

It is an amenable number.

99399973 is a deficient number, since it is larger than the sum of its proper divisors (1).

99399973 is an equidigital number, since it uses as much as digits as its factorization.

99399973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3720087, while the sum is 58.

The square root of 99399973 is about 9969.9535104232. The cubic root of 99399973 is about 463.2286608031.

The spelling of 99399973 in words is "ninety-nine million, three hundred ninety-nine thousand, nine hundred seventy-three".