84430203449 has 2 divisors, whose sum is σ = 84430203450. Its totient is φ = 84430203448.

The previous prime is 84430203437. The next prime is 84430203491. The reversal of 84430203449 is 94430203448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69145332025 + 15284871424 = 262955^2 + 123632^2 .

It is a cyclic number.

It is not a de Polignac number, because 84430203449 - 2¹² = 84430199353 is a prime.

It is not a weakly prime, because it can be changed into another prime (84430203049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42215101724 + 42215101725.

It is an arithmetic number, because the mean of its divisors is an integer number (42215101725).

Almost surely, 2^84430203449 is an apocalyptic number.

It is an amenable number.

84430203449 is a deficient number, since it is larger than the sum of its proper divisors (1).

84430203449 is an equidigital number, since it uses as much as digits as its factorization.

84430203449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 41.

Subtracting 84430203449 from its reverse (94430203448), we obtain a palindrome (9999999999).

The spelling of 84430203449 in words is "eighty-four billion, four hundred thirty million, two hundred three thousand, four hundred forty-nine".