1200299999 has 4 divisors (see below), whose sum is σ = 1211517864. Its totient is φ = 1189082136.

The previous prime is 1200299951. The next prime is 1200300007. The reversal of 1200299999 is 9999920021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200299999 - 2¹² = 1200295903 is a prime.

It is a Duffinian number.

1200299999 is a modest number, since divided by 99999 gives 12002 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200299099) 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, 5608772 + ... + 5608985.

It is an arithmetic number, because the mean of its divisors is an integer number (302879466).

Almost surely, 2^1200299999 is an apocalyptic number.

1200299999 is a deficient number, since it is larger than the sum of its proper divisors (11217865).

1200299999 is a wasteful number, since it uses less digits than its factorization.

1200299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11217864.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 1200299999 is about 34645.3459933654. The cubic root of 1200299999 is about 1062.7471163897.

The spelling of 1200299999 in words is "one billion, two hundred million, two hundred ninety-nine thousand, nine hundred ninety-nine".