850447 has 4 divisors (see below), whose sum is σ = 915880. Its totient is φ = 785016.

The previous prime is 850439. The next prime is 850453. The reversal of 850447 is 744058.

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 850447 - 2³ = 850439 is a prime.

It is a Duffinian number.

850447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850417) 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, 32697 + ... + 32722.

It is an arithmetic number, because the mean of its divisors is an integer number (228970).

2⁸⁵⁰⁴⁴⁷ is an apocalyptic number.

850447 is a deficient number, since it is larger than the sum of its proper divisors (65433).

850447 is a wasteful number, since it uses less digits than its factorization.

850447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65432.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 850447 is about 922.1968336532. The cubic root of 850447 is about 94.7434258637.

The spelling of 850447 in words is "eight hundred fifty thousand, four hundred forty-seven".