199972698 has 8 divisors (see below), whose sum is σ = 399945408. Its totient is φ = 66657564.

The previous prime is 199972697. The next prime is 199972709. The reversal of 199972698 is 896279991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

199972698 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199972691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16664386 + ... + 16664397.

It is an arithmetic number, because the mean of its divisors is an integer number (49993176).

Almost surely, 2^199972698 is an apocalyptic number.

199972698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199972698 is a wasteful number, since it uses less digits than its factorization.

199972698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33328788.

The product of its digits is 4408992, while the sum is 60.

The square root of 199972698 is about 14141.1703193194. The cubic root of 199972698 is about 584.7769359209.

The spelling of 199972698 in words is "one hundred ninety-nine million, nine hundred seventy-two thousand, six hundred ninety-eight".