139459 has 2 divisors, whose sum is σ = 139460. Its totient is φ = 139458.

The previous prime is 139457. The next prime is 139483. The reversal of 139459 is 954931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139459 - 2¹ = 139457 is a prime.

Together with 139457, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 1 + 3⁷ + 4² + 9² + 5⁷ + 9⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 139459.

It is not a weakly prime, because it can be changed into another prime (139457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69729 + 69730.

It is an arithmetic number, because the mean of its divisors is an integer number (69730).

2¹³⁹⁴⁵⁹ is an apocalyptic number.

139459 is a deficient number, since it is larger than the sum of its proper divisors (1).

139459 is an equidigital number, since it uses as much as digits as its factorization.

139459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 31.

The square root of 139459 is about 373.4420972520. The cubic root of 139459 is about 51.8579704105.

The spelling of 139459 in words is "one hundred thirty-nine thousand, four hundred fifty-nine".