858983 has 4 divisors (see below), whose sum is σ = 861408. Its totient is φ = 856560.

The previous prime is 858961. The next prime is 858989. The reversal of 858983 is 389858.

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 858983 - 2⁶ = 858919 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 858983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858989) 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, 566 + ... + 1427.

It is an arithmetic number, because the mean of its divisors is an integer number (215352).

2⁸⁵⁸⁹⁸³ is an apocalyptic number.

858983 is a deficient number, since it is larger than the sum of its proper divisors (2425).

858983 is a wasteful number, since it uses less digits than its factorization.

858983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424.

The product of its digits is 69120, while the sum is 41.

The square root of 858983 is about 926.8133576940. The cubic root of 858983 is about 95.0593534915.

The spelling of 858983 in words is "eight hundred fifty-eight thousand, nine hundred eighty-three".