199960002 has 90 divisors (see below), whose sum is σ = 497418537. Its totient is φ = 59994000.

The previous prime is 199959989. The next prime is 199960003. The reversal of 199960002 is 200069991.

It can be written as a sum of positive squares in 2 ways, for example, as 138791961 + 61168041 = 11781^2 + 7821^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9999.

It is not an unprimeable number, because it can be changed into a prime (199960003) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1979752 + ... + 1979852.

Almost surely, 2^199960002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199960002

199960002 is an abundant number, since it is smaller than the sum of its proper divisors (297458535).

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

199960002 is a wasteful number, since it uses less digits than its factorization.

199960002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 199960002 is about 14140.7214101686. The cubic root of 199960002 is about 584.7645600896.

It can be divided in two parts, 1999 and 60002, that added together give a square (62001 = 249²).

The spelling of 199960002 in words is "one hundred ninety-nine million, nine hundred sixty thousand, two".