864944983 has 4 divisors (see below), whose sum is σ = 988508560. Its totient is φ = 741381408.

The previous prime is 864944963. The next prime is 864945017. The reversal of 864944983 is 389449468.

It is a happy number.

864944983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 864944983 - 2²⁵ = 831390551 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 (864944963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61781778 + ... + 61781791.

It is an arithmetic number, because the mean of its divisors is an integer number (247127140).

Almost surely, 2^864944983 is an apocalyptic number.

864944983 is a deficient number, since it is larger than the sum of its proper divisors (123563577).

864944983 is a wasteful number, since it uses less digits than its factorization.

864944983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123563576.

The product of its digits is 5971968, while the sum is 55.

The square root of 864944983 is about 29409.9470077727. The cubic root of 864944983 is about 952.7877423964.

The spelling of 864944983 in words is "eight hundred sixty-four million, nine hundred forty-four thousand, nine hundred eighty-three".