199997708 has 6 divisors (see below), whose sum is σ = 349995996. Its totient is φ = 99998852.

The previous prime is 199997689. The next prime is 199997723. The reversal of 199997708 is 807799991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999710 + ... + 24999717.

It is an arithmetic number, because the mean of its divisors is an integer number (58332666).

Almost surely, 2^199997708 is an apocalyptic number.

It is an amenable number.

199997708 is a deficient number, since it is larger than the sum of its proper divisors (149998288).

199997708 is a wasteful number, since it uses less digits than its factorization.

199997708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49999431 (or 49999429 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 59.

The square root of 199997708 is about 14142.0545890617. The cubic root of 199997708 is about 584.8013136845.

The spelling of 199997708 in words is "one hundred ninety-nine million, nine hundred ninety-seven thousand, seven hundred eight".