99880073 has 2 divisors, whose sum is σ = 99880074. Its totient is φ = 99880072.

The previous prime is 99880069. The next prime is 99880087. The reversal of 99880073 is 37008899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60403984 + 39476089 = 7772^2 + 6283^2 .

It is an emirp because it is prime and its reverse (37008899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99880073 - 2² = 99880069 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 (99880003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49940036 + 49940037.

It is an arithmetic number, because the mean of its divisors is an integer number (49940037).

Almost surely, 2^99880073 is an apocalyptic number.

It is an amenable number.

99880073 is a deficient number, since it is larger than the sum of its proper divisors (1).

99880073 is an equidigital number, since it uses as much as digits as its factorization.

99880073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 99880073 is about 9994.0018511105. The cubic root of 99880073 is about 463.9732585287.

The spelling of 99880073 in words is "ninety-nine million, eight hundred eighty thousand, seventy-three".