844906 has 4 divisors (see below), whose sum is σ = 1267362. Its totient is φ = 422452.

The previous prime is 844903. The next prime is 844913. The reversal of 844906 is 609448.

844906 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 can be written as a sum of positive squares in only one way, i.e., 502681 + 342225 = 709^2 + 585^2 .

It is a super-2 number, since 2×844906² = 1427732297672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (844903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211225 + ... + 211228.

2⁸⁴⁴⁹⁰⁶ is an apocalyptic number.

844906 is a deficient number, since it is larger than the sum of its proper divisors (422456).

844906 is a wasteful number, since it uses less digits than its factorization.

844906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422455.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 844906 is about 919.1876848609. The cubic root of 844906 is about 94.5372136779.

The spelling of 844906 in words is "eight hundred forty-four thousand, nine hundred six".