858244 has 6 divisors (see below), whose sum is σ = 1501934. Its totient is φ = 429120.

The previous prime is 858241. The next prime is 858251. The reversal of 858244 is 442858.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 313600 = 738^2 + 560^2 .

It is not an unprimeable number, because it can be changed into a prime (858241) 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 as a sum of consecutive naturals, namely, 107277 + ... + 107284.

2⁸⁵⁸²⁴⁴ is an apocalyptic number.

It is an amenable number.

858244 is a deficient number, since it is larger than the sum of its proper divisors (643690).

858244 is a wasteful number, since it uses less digits than its factorization.

858244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214565 (or 214563 counting only the distinct ones).

The product of its digits is 10240, while the sum is 31.

The square root of 858244 is about 926.4145940129. The cubic root of 858244 is about 95.0320851919.

The spelling of 858244 in words is "eight hundred fifty-eight thousand, two hundred forty-four".