99938394 has 32 divisors (see below), whose sum is σ = 224136000. Its totient is φ = 33005232.

The previous prime is 99938357. The next prime is 99938401. The reversal of 99938394 is 49383999.

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

It is a self number, because there is not a number n which added to its sum of digits gives 99938394.

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, 2604 + ... + 14375.

It is an arithmetic number, because the mean of its divisors is an integer number (7004250).

Almost surely, 2^99938394 is an apocalyptic number.

99938394 is an abundant number, since it is smaller than the sum of its proper divisors (124197606).

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

99938394 is a wasteful number, since it uses less digits than its factorization.

99938394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17099 (or 17093 counting only the distinct ones).

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

The square root of 99938394 is about 9996.9192254414. The cubic root of 99938394 is about 464.0635472071.

It can be divided in two parts, 999 and 38394, that added together give a palindrome (39393).

The spelling of 99938394 in words is "ninety-nine million, nine hundred thirty-eight thousand, three hundred ninety-four".