199847812 has 12 divisors (see below), whose sum is σ = 351962380. Its totient is φ = 99287136.

The previous prime is 199847797. The next prime is 199847819. The reversal of 199847812 is 218748991.

It can be written as a sum of positive squares in 2 ways, for example, as 60466176 + 139381636 = 7776^2 + 11806^2 .

It is a super-2 number, since 2×199847812² = 79878295922374688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199847819) 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, 158487 + ... + 159742.

Almost surely, 2^199847812 is an apocalyptic number.

It is an amenable number.

199847812 is a deficient number, since it is larger than the sum of its proper divisors (152114568).

199847812 is a wasteful number, since it uses less digits than its factorization.

199847812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318390 (or 318388 counting only the distinct ones).

The product of its digits is 290304, while the sum is 49.

The square root of 199847812 is about 14136.7539414110. The cubic root of 199847812 is about 584.6551765319.

The spelling of 199847812 in words is "one hundred ninety-nine million, eight hundred forty-seven thousand, eight hundred twelve".