1309983 has 8 divisors (see below), whose sum is σ = 1753008. Its totient is φ = 870144.

The previous prime is 1309963. The next prime is 1309999. The reversal of 1309983 is 3899031.

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

It is not a de Polignac number, because 1309983 - 2¹⁶ = 1244447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (219126).

2^1309983 is an apocalyptic number.

1309983 is a deficient number, since it is larger than the sum of its proper divisors (443025).

1309983 is a wasteful number, since it uses less digits than its factorization.

1309983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1309983 is about 1144.5448877174. The cubic root of 1309983 is about 109.4179448231.

The spelling of 1309983 in words is "one million, three hundred nine thousand, nine hundred eighty-three".