99156222 has 48 divisors (see below), whose sum is σ = 236012400. Its totient is φ = 29836800.

The previous prime is 99156157. The next prime is 99156227. The reversal of 99156222 is 22265199.

It is a happy number.

99156222 is a `hidden beast` number, since 9 + 91 + 562 + 2 + 2 = 666.

It is a super-2 number, since 2×99156222² = 19663912722626568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99156227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27822 + ... + 31182.

It is an arithmetic number, because the mean of its divisors is an integer number (4916925).

Almost surely, 2^99156222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99156222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118006200).

99156222 is an abundant number, since it is smaller than the sum of its proper divisors (136856178).

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

99156222 is a wasteful number, since it uses less digits than its factorization.

99156222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529 (or 3526 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 99156222 is about 9957.7217273832. The cubic root of 99156222 is about 462.8497040577.

The spelling of 99156222 in words is "ninety-nine million, one hundred fifty-six thousand, two hundred twenty-two".