99580442 has 8 divisors (see below), whose sum is σ = 160860756. Its totient is φ = 45960192.

The previous prime is 99580433. The next prime is 99580447. The reversal of 99580442 is 24408599.

It is a Cunningham number, because it is equal to 9979²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 99580441 + 1 = 9979^2 + 1^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 99580442.

It is not an unprimeable number, because it can be changed into a prime (99580447) 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 3 ways as a sum of consecutive naturals, for example, 1914983 + ... + 1915034.

Almost surely, 2^99580442 is an apocalyptic number.

99580442 is a deficient number, since it is larger than the sum of its proper divisors (61280314).

99580442 is a wasteful number, since it uses less digits than its factorization.

99580442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830032.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 99580442 is about 9979.0000501052. Note that the first 4 decimals coincide. The cubic root of 99580442 is about 463.5088348257.

The spelling of 99580442 in words is "ninety-nine million, five hundred eighty thousand, four hundred forty-two".