139488 has 24 divisors (see below), whose sum is σ = 366408. Its totient is φ = 46464.

The previous prime is 139487. The next prime is 139493. The reversal of 139488 is 884931.

It is a tau number, because it is divible by the number of its divisors (24).

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 139488.

It is not an unprimeable number, because it can be changed into a prime (139483) 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 3 ways as a sum of consecutive naturals, for example, 631 + ... + 822.

It is an arithmetic number, because the mean of its divisors is an integer number (15267).

2¹³⁹⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

139488 is an abundant number, since it is smaller than the sum of its proper divisors (226920).

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

139488 is a wasteful number, since it uses less digits than its factorization.

139488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1458 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 139488 is about 373.4809232076. The cubic root of 139488 is about 51.8615647212.

The spelling of 139488 in words is "one hundred thirty-nine thousand, four hundred eighty-eight".