99999454439 has 6 divisors (see below), whose sum is σ = 105539590800. Its totient is φ = 94736324916.

The previous prime is 99999454417. The next prime is 99999454453. The reversal of 99999454439 is 93445499999.

It is not a de Polignac number, because 99999454439 - 2²⁰ = 99998405863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999454339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138503039 + ... + 138503760.

It is an arithmetic number, because the mean of its divisors is an integer number (17589931800).

Almost surely, 2^99999454439 is an apocalyptic number.

99999454439 is a deficient number, since it is larger than the sum of its proper divisors (5540136361).

99999454439 is a wasteful number, since it uses less digits than its factorization.

99999454439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277006837 (or 277006818 counting only the distinct ones).

The product of its digits is 510183360, while the sum is 74.

The spelling of 99999454439 in words is "ninety-nine billion, nine hundred ninety-nine million, four hundred fifty-four thousand, four hundred thirty-nine".