99442289 has 2 divisors, whose sum is σ = 99442290. Its totient is φ = 99442288.

The previous prime is 99442283. The next prime is 99442307. The reversal of 99442289 is 98224499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92640625 + 6801664 = 9625^2 + 2608^2 .

It is a cyclic number.

It is not a de Polignac number, because 99442289 - 2⁸ = 99442033 is a prime.

It is not a weakly prime, because it can be changed into another prime (99442283) 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, 49721144 + 49721145.

It is an arithmetic number, because the mean of its divisors is an integer number (49721145).

Almost surely, 2^99442289 is an apocalyptic number.

It is an amenable number.

99442289 is a deficient number, since it is larger than the sum of its proper divisors (1).

99442289 is an equidigital number, since it uses as much as digits as its factorization.

99442289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 99442289 is about 9972.0754610061. The cubic root of 99442289 is about 463.2943858480.

The spelling of 99442289 in words is "ninety-nine million, four hundred forty-two thousand, two hundred eighty-nine".