99609356 has 72 divisors (see below), whose sum is σ = 226146816. Its totient is φ = 37944480.

The previous prime is 99609353. The next prime is 99609359. The reversal of 99609356 is 65390699.

It is an interprime number because it is at equal distance from previous prime (99609353) and next prime (99609359).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 99609356.

It is not an unprimeable number, because it can be changed into a prime (99609353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100841 + ... + 101823.

It is an arithmetic number, because the mean of its divisors is an integer number (3140928).

Almost surely, 2^99609356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99609356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113073408).

99609356 is an abundant number, since it is smaller than the sum of its proper divisors (126537460).

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

99609356 is a wasteful number, since it uses less digits than its factorization.

99609356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 99609356 is about 9980.4486873086. The cubic root of 99609356 is about 463.5536916847.

The spelling of 99609356 in words is "ninety-nine million, six hundred nine thousand, three hundred fifty-six".