199690008 has 128 divisors (see below), whose sum is σ = 596574720. Its totient is φ = 54512640.

The previous prime is 199689989. The next prime is 199690009. The reversal of 199690008 is 800096991.

199690008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199690009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364791 + ... + 365337.

It is an arithmetic number, because the mean of its divisors is an integer number (4660740).

Almost surely, 2^199690008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199690008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298287360).

199690008 is an abundant number, since it is smaller than the sum of its proper divisors (396884712).

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

199690008 is a wasteful number, since it uses less digits than its factorization.

199690008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 199690008 is about 14131.1715013300. The cubic root of 199690008 is about 584.5012507038.

The spelling of 199690008 in words is "one hundred ninety-nine million, six hundred ninety thousand, eight".