1023983 has 6 divisors (see below), whose sum is σ = 1073592. Its totient is φ = 974820.

The previous prime is 1023977. The next prime is 1023991. The reversal of 1023983 is 3893201.

It is not a de Polignac number, because 1023983 - 2¹⁴ = 1007599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023943) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4748 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (178932).

2^1023983 is an apocalyptic number.

1023983 is a deficient number, since it is larger than the sum of its proper divisors (49609).

1023983 is an frugal number, since it uses more digits than its factorization.

1023983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1023983 is about 1011.9204514190. The cubic root of 1023983 is about 100.7931262110.

The spelling of 1023983 in words is "one million, twenty-three thousand, nine hundred eighty-three".