99843750 has 96 divisors (see below), whose sum is σ = 274218048. Its totient is φ = 26250000.

The previous prime is 99843739. The next prime is 99843769. The reversal of 99843750 is 5734899.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 99843696 and 99843705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1406215 + ... + 1406285.

It is an arithmetic number, because the mean of its divisors is an integer number (2856438).

Almost surely, 2^99843750 is an apocalyptic number.

99843750 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99843750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137109024).

99843750 is an abundant number, since it is smaller than the sum of its proper divisors (174374298).

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

99843750 is an frugal number, since it uses more digits than its factorization.

99843750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 99843750 is about 9992.1844458557. The cubic root of 99843750 is about 463.9170079223.

The spelling of 99843750 in words is "ninety-nine million, eight hundred forty-three thousand, seven hundred fifty".