99943873 has 2 divisors, whose sum is σ = 99943874. Its totient is φ = 99943872.

The previous prime is 99943847. The next prime is 99943897. The reversal of 99943873 is 37834999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72726784 + 27217089 = 8528^2 + 5217^2 .

It is a cyclic number.

It is not a de Polignac number, because 99943873 - 2⁵ = 99943841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99943873.

It is not a weakly prime, because it can be changed into another prime (99943273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49971936 + 49971937.

It is an arithmetic number, because the mean of its divisors is an integer number (49971937).

Almost surely, 2^99943873 is an apocalyptic number.

It is an amenable number.

99943873 is a deficient number, since it is larger than the sum of its proper divisors (1).

99943873 is an equidigital number, since it uses as much as digits as its factorization.

99943873 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 99943873 is about 9997.1932561094. The cubic root of 99943873 is about 464.0720276239.

The spelling of 99943873 in words is "ninety-nine million, nine hundred forty-three thousand, eight hundred seventy-three".