99999454440 has 64 divisors (see below), whose sum is σ = 300030816960. Its totient is φ = 26663636480.

The previous prime is 99999454417. The next prime is 99999454453. The reversal of 99999454440 is 4445499999.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214995 + ... + 1294685.

It is an arithmetic number, because the mean of its divisors is an integer number (4687981515).

Almost surely, 2^99999454440 is an apocalyptic number.

It is an amenable number.

99999454440 is an abundant number, since it is smaller than the sum of its proper divisors (200031362520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99999454440 is a wasteful number, since it uses less digits than its factorization.

99999454440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90162 (or 90158 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 66.

The spelling of 99999454440 in words is "ninety-nine billion, nine hundred ninety-nine million, four hundred fifty-four thousand, four hundred forty".