1299983705 has 8 divisors (see below), whose sum is σ = 1642084800. Its totient is φ = 985250736.

The previous prime is 1299983689. The next prime is 1299983719. The reversal of 1299983705 is 5073899921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1299983705 - 2⁴ = 1299983689 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 6841925 + ... + 6842114.

It is an arithmetic number, because the mean of its divisors is an integer number (205260600).

Almost surely, 2^1299983705 is an apocalyptic number.

It is an amenable number.

1299983705 is a deficient number, since it is larger than the sum of its proper divisors (342101095).

1299983705 is a wasteful number, since it uses less digits than its factorization.

1299983705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13684063.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 1299983705 is about 36055.2867829393. The cubic root of 1299983705 is about 1091.3883229787.

The spelling of 1299983705 in words is "one billion, two hundred ninety-nine million, nine hundred eighty-three thousand, seven hundred five".