199970012 has 12 divisors (see below), whose sum is σ = 381761016. Its totient is φ = 90895440.

The previous prime is 199970011. The next prime is 199970021. The reversal of 199970012 is 210079991.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199970011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2272343 + ... + 2272430.

It is an arithmetic number, because the mean of its divisors is an integer number (31813418).

Almost surely, 2^199970012 is an apocalyptic number.

It is an amenable number.

199970012 is a deficient number, since it is larger than the sum of its proper divisors (181791004).

199970012 is a wasteful number, since it uses less digits than its factorization.

199970012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544788 (or 4544786 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 199970012 is about 14141.0753480773. The cubic root of 199970012 is about 584.7743177003.

The spelling of 199970012 in words is "one hundred ninety-nine million, nine hundred seventy thousand, twelve".