99876540 has 96 divisors (see below), whose sum is σ = 298368000. Its totient is φ = 24890112.

The previous prime is 99876529. The next prime is 99876563. The reversal of 99876540 is 4567899.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99876540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89506 + ... + 90614.

It is an arithmetic number, because the mean of its divisors is an integer number (3108000).

Almost surely, 2^99876540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99876540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149184000).

99876540 is an abundant number, since it is smaller than the sum of its proper divisors (198491460).

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

99876540 is a wasteful number, since it uses less digits than its factorization.

99876540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 99876540 is about 9993.8250935265. The cubic root of 99876540 is about 463.9677878450.

The spelling of 99876540 in words is "ninety-nine million, eight hundred seventy-six thousand, five hundred forty".