99221432 has 8 divisors (see below), whose sum is σ = 186040200. Its totient is φ = 49610712.

The previous prime is 99221429. The next prime is 99221443. The reversal of 99221432 is 23412299.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201332 + ... + 6201347.

It is an arithmetic number, because the mean of its divisors is an integer number (23255025).

Almost surely, 2^99221432 is an apocalyptic number.

It is an amenable number.

99221432 is a deficient number, since it is larger than the sum of its proper divisors (86818768).

99221432 is a wasteful number, since it uses less digits than its factorization.

99221432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402685 (or 12402681 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 99221432 is about 9960.9955325760. The cubic root of 99221432 is about 462.9511460534.

The spelling of 99221432 in words is "ninety-nine million, two hundred twenty-one thousand, four hundred thirty-two".