99999000540 has 144 divisors (see below), whose sum is σ = 305018663040. Its totient is φ = 26518302720.

The previous prime is 99999000503. The next prime is 99999000589. The reversal of 99999000540 is 4500099999.

It is a happy number.

99999000540 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 90 + 0 + 0 + 540 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48052300 + ... + 48054380.

It is an arithmetic number, because the mean of its divisors is an integer number (2118185160).

Almost surely, 2^99999000540 is an apocalyptic number.

99999000540 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99999000540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152509331520).

99999000540 is an abundant number, since it is smaller than the sum of its proper divisors (205019662500).

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

99999000540 is a wasteful number, since it uses less digits than its factorization.

99999000540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The spelling of 99999000540 in words is "ninety-nine billion, nine hundred ninety-nine million, five hundred forty", and thus it is an aban number.