139429 has 2 divisors, whose sum is σ = 139430. Its totient is φ = 139428.

The previous prime is 139423. The next prime is 139439. The reversal of 139429 is 924931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88804 + 50625 = 298^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 139429 - 2⁵ = 139397 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 139397 and 139406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69714 + 69715.

It is an arithmetic number, because the mean of its divisors is an integer number (69715).

2¹³⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

139429 is a deficient number, since it is larger than the sum of its proper divisors (1).

139429 is an equidigital number, since it uses as much as digits as its factorization.

139429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 139429 is about 373.4019282221. The cubic root of 139429 is about 51.8542516337.

The spelling of 139429 in words is "one hundred thirty-nine thousand, four hundred twenty-nine".