983856813 has 32 divisors (see below), whose sum is σ = 1397235840. Its totient is φ = 614718720.

The previous prime is 983856799. The next prime is 983856821. The reversal of 983856813 is 318658389.

It is not a de Polignac number, because 983856813 - 2⁶ = 983856749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983856823) 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 31 ways as a sum of consecutive naturals, for example, 676395 + ... + 677847.

It is an arithmetic number, because the mean of its divisors is an integer number (43663620).

Almost surely, 2^983856813 is an apocalyptic number.

It is an amenable number.

983856813 is a deficient number, since it is larger than the sum of its proper divisors (413379027).

983856813 is a wasteful number, since it uses less digits than its factorization.

983856813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709.

The product of its digits is 1244160, while the sum is 51.

The square root of 983856813 is about 31366.4918822619. The cubic root of 983856813 is about 994.5897193180.

The spelling of 983856813 in words is "nine hundred eighty-three million, eight hundred fifty-six thousand, eight hundred thirteen".