99437800 has 144 divisors (see below), whose sum is σ = 290918880. Its totient is φ = 30940800.

The previous prime is 99437791. The next prime is 99437803. The reversal of 99437800 is 873499.

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

It is not an unprimeable number, because it can be changed into a prime (99437803) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 169107 + ... + 169693.

It is an arithmetic number, because the mean of its divisors is an integer number (2020270).

Almost surely, 2^99437800 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 99437800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145459440).

99437800 is an abundant number, since it is smaller than the sum of its proper divisors (191481080).

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

99437800 is a wasteful number, since it uses less digits than its factorization.

99437800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 99437800 is about 9971.8503799445. The cubic root of 99437800 is about 463.2874144350.

The spelling of 99437800 in words is "ninety-nine million, four hundred thirty-seven thousand, eight hundred".