99998449 has 2 divisors, whose sum is σ = 99998450. Its totient is φ = 99998448.

The previous prime is 99998447. The next prime is 99998473. The reversal of 99998449 is 94489999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52664049 + 47334400 = 7257^2 + 6880^2 .

It is an emirp because it is prime and its reverse (94489999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99998449 - 2¹ = 99998447 is a prime.

Together with 99998447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99998441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999224 + 49999225.

It is an arithmetic number, because the mean of its divisors is an integer number (49999225).

Almost surely, 2^99998449 is an apocalyptic number.

It is an amenable number.

99998449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998449 is an equidigital number, since it uses as much as digits as its factorization.

99998449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 61.

The square root of 99998449 is about 9999.9224496993. The cubic root of 99998449 is about 464.1564836474.

The spelling of 99998449 in words is "ninety-nine million, nine hundred ninety-eight thousand, four hundred forty-nine".