99541878 has 16 divisors (see below), whose sum is σ = 201017856. Its totient is φ = 32858280.

The previous prime is 99541867. The next prime is 99541879. The reversal of 99541878 is 87814599.

It is a self number, because there is not a number n which added to its sum of digits gives 99541878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99541879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79918 + ... + 81153.

It is an arithmetic number, because the mean of its divisors is an integer number (12563616).

Almost surely, 2^99541878 is an apocalyptic number.

99541878 is an abundant number, since it is smaller than the sum of its proper divisors (101475978).

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

99541878 is a wasteful number, since it uses less digits than its factorization.

99541878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161179.

The product of its digits is 725760, while the sum is 51.

The square root of 99541878 is about 9977.0676052636. The cubic root of 99541878 is about 463.4489935481.

The spelling of 99541878 in words is "ninety-nine million, five hundred forty-one thousand, eight hundred seventy-eight".