199992402 has 36 divisors (see below), whose sum is σ = 449989566. Its totient is φ = 66659760.

The previous prime is 199992391. The next prime is 199992427. The reversal of 199992402 is 204299991.

It can be written as a sum of positive squares in only one way, i.e., 145660761 + 54331641 = 12069^2 + 7371^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5502 + ... + 20742.

Almost surely, 2^199992402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199992402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224994783).

199992402 is an abundant number, since it is smaller than the sum of its proper divisors (249997164).

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

199992402 is an frugal number, since it uses more digits than its factorization.

199992402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15267 (or 15246 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 199992402 is about 14141.8669913134. The cubic root of 199992402 is about 584.7961419865.

The spelling of 199992402 in words is "one hundred ninety-nine million, nine hundred ninety-two thousand, four hundred two".