845384 has 8 divisors (see below), whose sum is σ = 1585110. Its totient is φ = 422688.

The previous prime is 845381. The next prime is 845387. The reversal of 845384 is 483548.

It is an interprime number because it is at equal distance from previous prime (845381) and next prime (845387).

It can be written as a sum of positive squares in only one way, i.e., 605284 + 240100 = 778^2 + 490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 845384.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845384.

It is not an unprimeable number, because it can be changed into a prime (845381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52829 + ... + 52844.

2⁸⁴⁵³⁸⁴ is an apocalyptic number.

It is an amenable number.

845384 is a deficient number, since it is larger than the sum of its proper divisors (739726).

845384 is a wasteful number, since it uses less digits than its factorization.

845384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105679 (or 105675 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 845384 is about 919.4476602831. The cubic root of 845384 is about 94.5550382521. Note that the first 3 decimals are identical.

The spelling of 845384 in words is "eight hundred forty-five thousand, three hundred eighty-four".