845913 has 4 divisors (see below), whose sum is σ = 1127888. Its totient is φ = 563940.

The previous prime is 845909. The next prime is 845921. The reversal of 845913 is 319548.

845913 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 845913 - 2² = 845909 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (845983) 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, 140983 + ... + 140988.

It is an arithmetic number, because the mean of its divisors is an integer number (281972).

2⁸⁴⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

845913 is a deficient number, since it is larger than the sum of its proper divisors (281975).

845913 is a wasteful number, since it uses less digits than its factorization.

845913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281974.

The product of its digits is 4320, while the sum is 30.

The square root of 845913 is about 919.7352880041. The cubic root of 845913 is about 94.5747567806.

The spelling of 845913 in words is "eight hundred forty-five thousand, nine hundred thirteen".