99442249 has 2 divisors, whose sum is σ = 99442250. Its totient is φ = 99442248.

The previous prime is 99442243. The next prime is 99442253. The reversal of 99442249 is 94224499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99361024 + 81225 = 9968^2 + 285^2 .

It is an emirp because it is prime and its reverse (94224499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99442249 - 2³ = 99442241 is a prime.

It is not a weakly prime, because it can be changed into another prime (99442241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49721124 + 49721125.

It is an arithmetic number, because the mean of its divisors is an integer number (49721125).

Almost surely, 2^99442249 is an apocalyptic number.

It is an amenable number.

99442249 is a deficient number, since it is larger than the sum of its proper divisors (1).

99442249 is an equidigital number, since it uses as much as digits as its factorization.

99442249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 99442249 is about 9972.0734554054. The cubic root of 99442249 is about 463.2943237290.

The spelling of 99442249 in words is "ninety-nine million, four hundred forty-two thousand, two hundred forty-nine".