99993449 has 2 divisors, whose sum is σ = 99993450. Its totient is φ = 99993448.

The previous prime is 99993433. The next prime is 99993461. The reversal of 99993449 is 94439999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99301225 + 692224 = 9965^2 + 832^2 .

It is a cyclic number.

It is not a de Polignac number, because 99993449 - 2⁴ = 99993433 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99993394 and 99993403.

It is not a weakly prime, because it can be changed into another prime (99993419) 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, 49996724 + 49996725.

It is an arithmetic number, because the mean of its divisors is an integer number (49996725).

Almost surely, 2^99993449 is an apocalyptic number.

It is an amenable number.

99993449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99993449 is an equidigital number, since it uses as much as digits as its factorization.

99993449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 56.

The square root of 99993449 is about 9999.6724446354. The cubic root of 99993449 is about 464.1487474571.

The spelling of 99993449 in words is "ninety-nine million, nine hundred ninety-three thousand, four hundred forty-nine".