Multipling 139392 by its product of digits (1458), we get a square (203233536 = 142562).
It is a tau number, because it is divible by the number of its divisors (72).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=264.
It is a nude number because it is divisible by every one of its digits.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139392.
139392 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
139392 is a Friedman number, since it can be written as 192*(9^3-3), using all its digits and the basic arithmetic operations.
2139392 is an apocalyptic number.
139392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 139392
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
139392 is a wasteful number, since it uses less digits than its factorization.
139392 is an odious number, because the sum of its binary digits is odd.
The square root of 139392 is about 373.3523804665. The cubic root of 139392 is about 51.8496644076.
The spelling of 139392 in words is "one hundred thirty-nine thousand, three hundred ninety-two".