966439983 has 4 divisors (see below), whose sum is σ = 1288586648. Its totient is φ = 644293320.

The previous prime is 966439961. The next prime is 966440009. The reversal of 966439983 is 389934669.

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

It is not a de Polignac number, because 966439983 - 2²¹ = 964342831 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 (966439913) 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 3 ways as a sum of consecutive naturals, for example, 161073328 + ... + 161073333.

It is an arithmetic number, because the mean of its divisors is an integer number (322146662).

Almost surely, 2^966439983 is an apocalyptic number.

966439983 is a deficient number, since it is larger than the sum of its proper divisors (322146665).

966439983 is a wasteful number, since it uses less digits than its factorization.

966439983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322146664.

The product of its digits is 7558272, while the sum is 57.

The square root of 966439983 is about 31087.6178405487. The cubic root of 966439983 is about 988.6857993107.

The spelling of 966439983 in words is "nine hundred sixty-six million, four hundred thirty-nine thousand, nine hundred eighty-three".