45839 has 4 divisors (see below), whose sum is σ = 47856. Its totient is φ = 43824.

The previous prime is 45833. The next prime is 45841. The reversal of 45839 is 93854.

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 45839 - 2⁴ = 45823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45833) 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, 974 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (11964).

2⁴⁵⁸³⁹ is an apocalyptic number.

45839 is a deficient number, since it is larger than the sum of its proper divisors (2017).

45839 is a wasteful number, since it uses less digits than its factorization.

45839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its digits is 4320, while the sum is 29.

The square root of 45839 is about 214.1004437174. The cubic root of 45839 is about 35.7886276207.

The spelling of 45839 in words is "forty-five thousand, eight hundred thirty-nine".