99221392 has 20 divisors (see below), whose sum is σ = 194008540. Its totient is φ = 49154688.

The previous prime is 99221389. The next prime is 99221399. The reversal of 99221392 is 29312299.

It can be written as a sum of positive squares in 2 ways, for example, as 39992976 + 59228416 = 6324^2 + 7696^2 .

It is not an unprimeable number, because it can be changed into a prime (99221399) 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, 26703 + ... + 30190.

It is an arithmetic number, because the mean of its divisors is an integer number (9700427).

Almost surely, 2^99221392 is an apocalyptic number.

It is an amenable number.

99221392 is a deficient number, since it is larger than the sum of its proper divisors (94787148).

99221392 is a wasteful number, since it uses less digits than its factorization.

99221392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57010 (or 57004 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 99221392 is about 9960.9935247444. The cubic root of 99221392 is about 462.9510838422.

The spelling of 99221392 in words is "ninety-nine million, two hundred twenty-one thousand, three hundred ninety-two".