139398 has 16 divisors (see below), whose sum is σ = 318720. Its totient is φ = 39816.

The previous prime is 139397. The next prime is 139409. The reversal of 139398 is 893931.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139398.

It is not an unprimeable number, because it can be changed into a prime (139393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (19920).

2¹³⁹³⁹⁸ is an apocalyptic number.

139398 is an abundant number, since it is smaller than the sum of its proper divisors (179322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139398 is a wasteful number, since it uses less digits than its factorization.

139398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331.

The product of its digits is 5832, while the sum is 33.

The square root of 139398 is about 373.3604156844. The cubic root of 139398 is about 51.8504083372.

The spelling of 139398 in words is "one hundred thirty-nine thousand, three hundred ninety-eight".