99934398 has 80 divisors (see below), whose sum is σ = 239771664. Its totient is φ = 31000320.

The previous prime is 99934391. The next prime is 99934403. The reversal of 99934398 is 89343999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99934391) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 360636 + ... + 360912.

Almost surely, 2^99934398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99934398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119885832).

99934398 is an abundant number, since it is smaller than the sum of its proper divisors (139837266).

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

99934398 is a wasteful number, since it uses less digits than its factorization.

99934398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 430 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 99934398 is about 9996.7193618707. The cubic root of 99934398 is about 464.0573619878.

The spelling of 99934398 in words is "ninety-nine million, nine hundred thirty-four thousand, three hundred ninety-eight".