139547 has 2 divisors, whose sum is σ = 139548. Its totient is φ = 139546.

The previous prime is 139537. The next prime is 139571. The reversal of 139547 is 745931.

It is a weak prime.

It is an emirp because it is prime and its reverse (745931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139547 - 2⁶ = 139483 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139547.

It is not a weakly prime, because it can be changed into another prime (139537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69773 + 69774.

It is an arithmetic number, because the mean of its divisors is an integer number (69774).

2¹³⁹⁵⁴⁷ is an apocalyptic number.

139547 is a deficient number, since it is larger than the sum of its proper divisors (1).

139547 is an equidigital number, since it uses as much as digits as its factorization.

139547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 139547 is about 373.5599014884. The cubic root of 139547 is about 51.8688757467.

It can be divided in two parts, 139 and 547, that added together give a palindrome (686).

The spelling of 139547 in words is "one hundred thirty-nine thousand, five hundred forty-seven".