99121936 has 45 divisors (see below), whose sum is σ = 204247623. Its totient is φ = 46594080.

The previous prime is 99121931. The next prime is 99121937. The reversal of 99121936 is 63912199.

The square root of 99121936 is 9956.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99121931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 756591 + ... + 756721.

Almost surely, 2^99121936 is an apocalyptic number.

99121936 is the 9956-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99121936

99121936 is an abundant number, since it is smaller than the sum of its proper divisors (105125687).

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

99121936 is a wasteful number, since it uses less digits than its factorization.

99121936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 152 counting only the distinct ones).

The product of its digits is 26244, while the sum is 40.

The cubic root of 99121936 is about 462.7963502219.

Multiplying 99121936 by its product of digits (26244), we get a square (2601356088384 = 1612872²).

It can be divided in two parts, 9912193 and 6, that added together give a palindrome (9912199).

The spelling of 99121936 in words is "ninety-nine million, one hundred twenty-one thousand, nine hundred thirty-six".