199978096 has 20 divisors (see below), whose sum is σ = 388417600. Its totient is φ = 99741312.

The previous prime is 199978087. The next prime is 199978111. The reversal of 199978096 is 690879991.

It is a self number, because there is not a number n which added to its sum of digits gives 199978096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8736 + ... + 21823.

It is an arithmetic number, because the mean of its divisors is an integer number (19420880).

Almost surely, 2^199978096 is an apocalyptic number.

199978096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199978096 is a deficient number, since it is larger than the sum of its proper divisors (188439504).

199978096 is a wasteful number, since it uses less digits than its factorization.

199978096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30976 (or 30970 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 58.

The square root of 199978096 is about 14141.3611791793. The cubic root of 199978096 is about 584.7821976350.

The spelling of 199978096 in words is "one hundred ninety-nine million, nine hundred seventy-eight thousand, ninety-six".