148639 has 2 divisors, whose sum is σ = 148640. Its totient is φ = 148638.

The previous prime is 148633. The next prime is 148663. The reversal of 148639 is 936841.

148639 is nontrivially palindromic in base 12.

148639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148639 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 148639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74319 + 74320.

It is an arithmetic number, because the mean of its divisors is an integer number (74320).

2¹⁴⁸⁶³⁹ is an apocalyptic number.

148639 is a deficient number, since it is larger than the sum of its proper divisors (1).

148639 is an equidigital number, since it uses as much as digits as its factorization.

148639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 148639 is about 385.5372874314. The cubic root of 148639 is about 52.9717423831.

It can be divided in two parts, 148 and 639, that added together give a palindrome (787).

The spelling of 148639 in words is "one hundred forty-eight thousand, six hundred thirty-nine".