1009983 has 32 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 556416.

The previous prime is 1009963. The next prime is 1009991. The reversal of 1009983 is 3899001.

It is a happy number.

It is not a de Polignac number, because 1009983 - 2⁵ = 1009951 is a prime.

1009983 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1009983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21466 + ... + 21512.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2^1009983 is an apocalyptic number.

1009983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1009983 is a deficient number, since it is larger than the sum of its proper divisors (602817).

1009983 is a wasteful number, since it uses less digits than its factorization.

1009983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1009983 is about 1004.9791042604. The cubic root of 1009983 is about 100.3316654310.

The spelling of 1009983 in words is "one million, nine thousand, nine hundred eighty-three".