45439 has 2 divisors, whose sum is σ = 45440. Its totient is φ = 45438.

The previous prime is 45433. The next prime is 45481. The reversal of 45439 is 93454.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45439 - 2⁹ = 44927 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22719 + 22720.

It is an arithmetic number, because the mean of its divisors is an integer number (22720).

2⁴⁵⁴³⁹ is an apocalyptic number.

45439 is a deficient number, since it is larger than the sum of its proper divisors (1).

45439 is an equidigital number, since it uses as much as digits as its factorization.

45439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 45439 is about 213.1642559155. The cubic root of 45439 is about 35.6842238459.

It can be divided in two parts, 45 and 439, that added together give a palindrome (484).

The spelling of 45439 in words is "forty-five thousand, four hundred thirty-nine".