1199009912 has 16 divisors (see below), whose sum is σ = 2255820840. Its totient is φ = 597457696.

The previous prime is 1199009789. The next prime is 1199009923. The reversal of 1199009912 is 2199009911.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1199009912.

It is a congruent number.

It is an unprimeable number.

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, 253418 + ... + 258105.

Almost surely, 2^1199009912 is an apocalyptic number.

It is an amenable number.

1199009912 is a deficient number, since it is larger than the sum of its proper divisors (1056810928).

1199009912 is a wasteful number, since it uses less digits than its factorization.

1199009912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511822 (or 511818 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 41.

The square root of 1199009912 is about 34626.7225131112. The cubic root of 1199009912 is about 1062.3662316853.

Subtracting 1199009912 from its reverse (2199009911), we obtain a palindrome (999999999).

The spelling of 1199009912 in words is "one billion, one hundred ninety-nine million, nine thousand, nine hundred twelve".