199997046 has 16 divisors (see below), whose sum is σ = 444438000. Its totient is φ = 66665664.

The previous prime is 199997041. The next prime is 199997053. The reversal of 199997046 is 640799991.

199997046 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199997046² = 79997636817452232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 3703649 = 199997046 / (1 + 9 + 9 + 9 + 9 + 7 + 0 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 199996983 and 199997001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199997041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851771 + ... + 1851878.

It is an arithmetic number, because the mean of its divisors is an integer number (27777375).

Almost surely, 2^199997046 is an apocalyptic number.

199997046 is an abundant number, since it is smaller than the sum of its proper divisors (244440954).

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

199997046 is a wasteful number, since it uses less digits than its factorization.

199997046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703660 (or 3703654 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 199997046 is about 14142.0311836737. The cubic root of 199997046 is about 584.8006684456.

The spelling of 199997046 in words is "one hundred ninety-nine million, nine hundred ninety-seven thousand, forty-six".