84453835449 has 4 divisors (see below), whose sum is σ = 112605113936. Its totient is φ = 56302556964.

The previous prime is 84453835421. The next prime is 84453835457. The reversal of 84453835449 is 94453835448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 84453835449 - 2⁹ = 84453834937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84453835049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14075639239 + ... + 14075639244.

It is an arithmetic number, because the mean of its divisors is an integer number (28151278484).

Almost surely, 2^84453835449 is an apocalyptic number.

It is an amenable number.

84453835449 is a deficient number, since it is larger than the sum of its proper divisors (28151278487).

84453835449 is a wasteful number, since it uses less digits than its factorization.

84453835449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28151278486.

The product of its digits is 33177600, while the sum is 57.

Subtracting 84453835449 from its reverse (94453835448), we obtain a palindrome (9999999999).

The spelling of 84453835449 in words is "eighty-four billion, four hundred fifty-three million, eight hundred thirty-five thousand, four hundred forty-nine".