99220400 has 30 divisors (see below), whose sum is σ = 238377972. Its totient is φ = 39688000.

The previous prime is 99220379. The next prime is 99220463. The reversal of 99220400 is 402299.

It is a self number, because there is not a number n which added to its sum of digits gives 99220400.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 123626 + ... + 124425.

Almost surely, 2^99220400 is an apocalyptic number.

It is an amenable number.

99220400 is an abundant number, since it is smaller than the sum of its proper divisors (139157572).

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

99220400 is a wasteful number, since it uses less digits than its factorization.

99220400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248069 (or 248058 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 99220400 is about 9960.9437303902. The cubic root of 99220400 is about 462.9495409995.

Adding to 99220400 its reverse (402299), we get a palindrome (99622699).

The spelling of 99220400 in words is "ninety-nine million, two hundred twenty thousand, four hundred".