139938285 has 16 divisors (see below), whose sum is σ = 228127104. Its totient is φ = 73225152.

The previous prime is 139938269. The next prime is 139938341. The reversal of 139938285 is 582839931.

It is a happy number.

It is not a de Polignac number, because 139938285 - 2⁴ = 139938269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87217 + ... + 88806.

It is an arithmetic number, because the mean of its divisors is an integer number (14257944).

Almost surely, 2^139938285 is an apocalyptic number.

139938285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139938285 is a deficient number, since it is larger than the sum of its proper divisors (88188819).

139938285 is a wasteful number, since it uses less digits than its factorization.

139938285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176084.

The product of its digits is 466560, while the sum is 48.

The square root of 139938285 is about 11829.5513439860. The cubic root of 139938285 is about 519.1731002154.

The spelling of 139938285 in words is "one hundred thirty-nine million, nine hundred thirty-eight thousand, two hundred eighty-five".