851983 has 8 divisors (see below), whose sum is σ = 943056. Its totient is φ = 763200.

The previous prime is 851971. The next prime is 852011. The reversal of 851983 is 389158.

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 851983 - 2⁹ = 851471 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 (851953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (117882).

2⁸⁵¹⁹⁸³ is an apocalyptic number.

851983 is a deficient number, since it is larger than the sum of its proper divisors (91073).

851983 is a wasteful number, since it uses less digits than its factorization.

851983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145.

The product of its digits is 8640, while the sum is 34.

The square root of 851983 is about 923.0292519742. The cubic root of 851983 is about 94.8004305440.

The spelling of 851983 in words is "eight hundred fifty-one thousand, nine hundred eighty-three".