99389473 has 2 divisors, whose sum is σ = 99389474. Its totient is φ = 99389472.

The previous prime is 99389461. The next prime is 99389519. The reversal of 99389473 is 37498399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93547584 + 5841889 = 9672^2 + 2417^2 .

It is an emirp because it is prime and its reverse (37498399) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99389473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99389473.

It is not a weakly prime, because it can be changed into another prime (99389273) 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, 49694736 + 49694737.

It is an arithmetic number, because the mean of its divisors is an integer number (49694737).

Almost surely, 2^99389473 is an apocalyptic number.

It is an amenable number.

99389473 is a deficient number, since it is larger than the sum of its proper divisors (1).

99389473 is an equidigital number, since it uses as much as digits as its factorization.

99389473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 99389473 is about 9969.4269143216. The cubic root of 99389473 is about 463.2123493560.

The spelling of 99389473 in words is "ninety-nine million, three hundred eighty-nine thousand, four hundred seventy-three".