199440108 has 72 divisors (see below), whose sum is σ = 577493280. Its totient is φ = 56851200.

The previous prime is 199440089. The next prime is 199440127. The reversal of 199440108 is 801044991.

It is an interprime number because it is at equal distance from previous prime (199440089) and next prime (199440127).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 176088 + ... + 177216.

It is an arithmetic number, because the mean of its divisors is an integer number (8020740).

Almost surely, 2^199440108 is an apocalyptic number.

199440108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199440108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288746640).

199440108 is an abundant number, since it is smaller than the sum of its proper divisors (378053172).

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

199440108 is a wasteful number, since it uses less digits than its factorization.

199440108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 199440108 is about 14122.3265788609. The cubic root of 199440108 is about 584.2573262369.

The spelling of 199440108 in words is "one hundred ninety-nine million, four hundred forty thousand, one hundred eight".