99801073 has 2 divisors, whose sum is σ = 99801074. Its totient is φ = 99801072.

The previous prime is 99801043. The next prime is 99801077. The reversal of 99801073 is 37010899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87459904 + 12341169 = 9352^2 + 3513^2 .

It is an emirp because it is prime and its reverse (37010899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99801073 - 2¹³ = 99792881 is a prime.

It is not a weakly prime, because it can be changed into another prime (99801077) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49900536 + 49900537.

It is an arithmetic number, because the mean of its divisors is an integer number (49900537).

Almost surely, 2^99801073 is an apocalyptic number.

It is an amenable number.

99801073 is a deficient number, since it is larger than the sum of its proper divisors (1).

99801073 is an equidigital number, since it uses as much as digits as its factorization.

99801073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 99801073 is about 9990.0486985800. The cubic root of 99801073 is about 463.8508999362.

The spelling of 99801073 in words is "ninety-nine million, eight hundred one thousand, seventy-three".