99722971 has 2 divisors, whose sum is σ = 99722972. Its totient is φ = 99722970.

The previous prime is 99722957. The next prime is 99722981. The reversal of 99722971 is 17922799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99722971 - 2¹¹ = 99720923 is a prime.

It is not a weakly prime, because it can be changed into another prime (99722941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49861485 + 49861486.

It is an arithmetic number, because the mean of its divisors is an integer number (49861486).

Almost surely, 2^99722971 is an apocalyptic number.

99722971 is the 5766-th hex number.

99722971 is a deficient number, since it is larger than the sum of its proper divisors (1).

99722971 is an equidigital number, since it uses as much as digits as its factorization.

99722971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 46.

The square root of 99722971 is about 9986.1389435557. The cubic root of 99722971 is about 463.7298687144.

The spelling of 99722971 in words is "ninety-nine million, seven hundred twenty-two thousand, nine hundred seventy-one".