99983449 has 2 divisors, whose sum is σ = 99983450. Its totient is φ = 99983448.

The previous prime is 99983441. The next prime is 99983459. The reversal of 99983449 is 94438999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 18983449 = 9000^2 + 4357^2 .

It is a cyclic number.

It is not a de Polignac number, because 99983449 - 2³ = 99983441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99983449.

It is not a weakly prime, because it can be changed into another prime (99983441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49991724 + 49991725.

It is an arithmetic number, because the mean of its divisors is an integer number (49991725).

Almost surely, 2^99983449 is an apocalyptic number.

It is an amenable number.

99983449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99983449 is an equidigital number, since it uses as much as digits as its factorization.

99983449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 55.

The square root of 99983449 is about 9999.1724157552. The cubic root of 99983449 is about 464.1332743028.

It can be divided in two parts, 999 and 83449, that added together give a palindrome (84448).

The spelling of 99983449 in words is "ninety-nine million, nine hundred eighty-three thousand, four hundred forty-nine".