99818773 has 2 divisors, whose sum is σ = 99818774. Its totient is φ = 99818772.

The previous prime is 99818749. The next prime is 99818801. The reversal of 99818773 is 37781899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61105489 + 38713284 = 7817^2 + 6222^2 .

It is a cyclic number.

It is not a de Polignac number, because 99818773 - 2²¹ = 97721621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99818773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99818743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49909386 + 49909387.

It is an arithmetic number, because the mean of its divisors is an integer number (49909387).

Almost surely, 2^99818773 is an apocalyptic number.

It is an amenable number.

99818773 is a deficient number, since it is larger than the sum of its proper divisors (1).

99818773 is an equidigital number, since it uses as much as digits as its factorization.

99818773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 52.

The square root of 99818773 is about 9990.9345408725. The cubic root of 99818773 is about 463.8783200676.

The spelling of 99818773 in words is "ninety-nine million, eight hundred eighteen thousand, seven hundred seventy-three".