99423522 has 72 divisors (see below), whose sum is σ = 239016960. Its totient is φ = 29845200.

The previous prime is 99423521. The next prime is 99423529. The reversal of 99423522 is 22532499.

99423522 is a `hidden beast` number, since 99 + 42 + 3 + 522 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99423521) 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 35 ways as a sum of consecutive naturals, for example, 415879 + ... + 416117.

It is an arithmetic number, because the mean of its divisors is an integer number (3319680).

Almost surely, 2^99423522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99423522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119508480).

99423522 is an abundant number, since it is smaller than the sum of its proper divisors (139593438).

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

99423522 is a wasteful number, since it uses less digits than its factorization.

99423522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 446 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 99423522 is about 9971.1344389693. The cubic root of 99423522 is about 463.2652393187.

The spelling of 99423522 in words is "ninety-nine million, four hundred twenty-three thousand, five hundred twenty-two".