99532840 has 64 divisors (see below), whose sum is σ = 249557760. Its totient is φ = 35416320.

The previous prime is 99532817. The next prime is 99532861. The reversal of 99532840 is 4823599.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 99532793 and 99532802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18274 + ... + 23086.

It is an arithmetic number, because the mean of its divisors is an integer number (3899340).

Almost surely, 2^99532840 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 99532840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124778880).

99532840 is an abundant number, since it is smaller than the sum of its proper divisors (150024920).

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

99532840 is a wasteful number, since it uses less digits than its factorization.

99532840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882 (or 4878 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 99532840 is about 9976.6146562850. The cubic root of 99532840 is about 463.4349666921.

The spelling of 99532840 in words is "ninety-nine million, five hundred thirty-two thousand, eight hundred forty".