99644442 has 8 divisors (see below), whose sum is σ = 199288896. Its totient is φ = 33214812.

The previous prime is 99644437. The next prime is 99644443. The reversal of 99644442 is 24444699.

It is a sphenic number, since it is the product of 3 distinct primes.

99644442 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99644394 and 99644403.

It is not an unprimeable number, because it can be changed into a prime (99644443) 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 3 ways as a sum of consecutive naturals, for example, 8303698 + ... + 8303709.

It is an arithmetic number, because the mean of its divisors is an integer number (24911112).

Almost surely, 2^99644442 is an apocalyptic number.

99644442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99644442 is a wasteful number, since it uses less digits than its factorization.

99644442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16607412.

The product of its digits is 248832, while the sum is 42.

The square root of 99644442 is about 9982.2062691571. The cubic root of 99644442 is about 463.6081120599.

The spelling of 99644442 in words is "ninety-nine million, six hundred forty-four thousand, four hundred forty-two".