99989105140 has 48 divisors (see below), whose sum is σ = 212122842624. Its totient is φ = 39587184000.

The previous prime is 99989105129. The next prime is 99989105147. The reversal of 99989105140 is 4150198999.

It is a super-2 number, since 2×99989105140² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99989105147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8977375 + ... + 8988505.

It is an arithmetic number, because the mean of its divisors is an integer number (4419225888).

Almost surely, 2^99989105140 is an apocalyptic number.

It is an amenable number.

99989105140 is an abundant number, since it is smaller than the sum of its proper divisors (112133737484).

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

99989105140 is a wasteful number, since it uses less digits than its factorization.

99989105140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15688 (or 15686 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 55.

The spelling of 99989105140 in words is "ninety-nine billion, nine hundred eighty-nine million, one hundred five thousand, one hundred forty".