850399 has 8 divisors (see below), whose sum is σ = 938448. Its totient is φ = 764160.

The previous prime is 850397. The next prime is 850403. The reversal of 850399 is 993058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 850399 - 2¹ = 850397 is a prime.

It is a Duffinian number.

850399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669 + ... + 1465.

It is an arithmetic number, because the mean of its divisors is an integer number (117306).

2⁸⁵⁰³⁹⁹ is an apocalyptic number.

850399 is a deficient number, since it is larger than the sum of its proper divisors (88049).

850399 is a wasteful number, since it uses less digits than its factorization.

850399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 850399 is about 922.1708084731. The cubic root of 850399 is about 94.7416433618.

The spelling of 850399 in words is "eight hundred fifty thousand, three hundred ninety-nine".