99943500 has 48 divisors (see below), whose sum is σ = 291039840. Its totient is φ = 26651200.

The previous prime is 99943499. The next prime is 99943513. The reversal of 99943500 is 534999.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 31815 + ... + 34814.

It is an arithmetic number, because the mean of its divisors is an integer number (6063330).

Almost surely, 2^99943500 is an apocalyptic number.

It is an amenable number.

99943500 is an abundant number, since it is smaller than the sum of its proper divisors (191096340).

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

99943500 is a wasteful number, since it uses less digits than its factorization.

99943500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66651 (or 66639 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 99943500 is about 9997.1746008560. The cubic root of 99943500 is about 464.0714503030.

The spelling of 99943500 in words is "ninety-nine million, nine hundred forty-three thousand, five hundred".