139988282 has 8 divisors (see below), whose sum is σ = 239979936. Its totient is φ = 59994972.

The previous prime is 139988273. The next prime is 139988287. The reversal of 139988282 is 282889931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 139988282.

It is not an unprimeable number, because it can be changed into a prime (139988287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4999568 + ... + 4999595.

It is an arithmetic number, because the mean of its divisors is an integer number (29997492).

Almost surely, 2^139988282 is an apocalyptic number.

139988282 is a deficient number, since it is larger than the sum of its proper divisors (99991654).

139988282 is an equidigital number, since it uses as much as digits as its factorization.

139988282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999172.

The product of its digits is 497664, while the sum is 50.

The square root of 139988282 is about 11831.6643799594. The cubic root of 139988282 is about 519.2349227224.

The spelling of 139988282 in words is "one hundred thirty-nine million, nine hundred eighty-eight thousand, two hundred eighty-two".