844407 has 12 divisors (see below), whose sum is σ = 1291680. Its totient is φ = 529728.

The previous prime is 844369. The next prime is 844421. The reversal of 844407 is 704448.

It is not a de Polignac number, because 844407 - 2⁷ = 844279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2607 + ... + 2912.

It is an arithmetic number, because the mean of its divisors is an integer number (107640).

2⁸⁴⁴⁴⁰⁷ is an apocalyptic number.

844407 is a deficient number, since it is larger than the sum of its proper divisors (447273).

844407 is a wasteful number, since it uses less digits than its factorization.

844407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542 (or 5539 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 844407 is about 918.9162094555. The cubic root of 844407 is about 94.5185988420.

The spelling of 844407 in words is "eight hundred forty-four thousand, four hundred seven".