199929660 has 48 divisors (see below), whose sum is σ = 639776256. Its totient is φ = 45698112.

The previous prime is 199929643. The next prime is 199929671. The reversal of 199929660 is 66929991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237592 + ... + 238431.

It is an arithmetic number, because the mean of its divisors is an integer number (13328672).

Almost surely, 2^199929660 is an apocalyptic number.

199929660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199929660 is an abundant number, since it is smaller than the sum of its proper divisors (439846596).

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

199929660 is a wasteful number, since it uses less digits than its factorization.

199929660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476042 (or 476040 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 51.

The square root of 199929660 is about 14139.6485104829. The cubic root of 199929660 is about 584.7349811344.

The spelling of 199929660 in words is "one hundred ninety-nine million, nine hundred twenty-nine thousand, six hundred sixty".