845799 has 4 divisors (see below), whose sum is σ = 1127736. Its totient is φ = 563864.

The previous prime is 845777. The next prime is 845809. The reversal of 845799 is 997548.

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 845799 - 2⁹ = 845287 is a prime.

It is a D-number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 845799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845729) 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, 140964 + ... + 140969.

It is an arithmetic number, because the mean of its divisors is an integer number (281934).

2⁸⁴⁵⁷⁹⁹ is an apocalyptic number.

845799 is a deficient number, since it is larger than the sum of its proper divisors (281937).

845799 is a wasteful number, since it uses less digits than its factorization.

845799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281936.

The product of its digits is 90720, while the sum is 42.

The square root of 845799 is about 919.6733115623. The cubic root of 845799 is about 94.5705081142.

The spelling of 845799 in words is "eight hundred forty-five thousand, seven hundred ninety-nine".