99158540 has 48 divisors (see below), whose sum is σ = 232001280. Its totient is φ = 35347200.

The previous prime is 99158539. The next prime is 99158599. The reversal of 99158540 is 4585199.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965 + ... + 14115.

It is an arithmetic number, because the mean of its divisors is an integer number (4833360).

Almost surely, 2^99158540 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 99158540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116000640).

99158540 is an abundant number, since it is smaller than the sum of its proper divisors (132842740).

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

99158540 is a wasteful number, since it uses less digits than its factorization.

99158540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13202 (or 13200 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 99158540 is about 9957.8381187886. The cubic root of 99158540 is about 462.8533107477.

The spelling of 99158540 in words is "ninety-nine million, one hundred fifty-eight thousand, five hundred forty".