139105286 has 8 divisors (see below), whose sum is σ = 215853120. Its totient is φ = 67154248.

The previous prime is 139105283. The next prime is 139105331. The reversal of 139105286 is 682501931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139105283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199126 + ... + 1199241.

It is an arithmetic number, because the mean of its divisors is an integer number (26981640).

Almost surely, 2^139105286 is an apocalyptic number.

139105286 is a deficient number, since it is larger than the sum of its proper divisors (76747834).

139105286 is a wasteful number, since it uses less digits than its factorization.

139105286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398398.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 139105286 is about 11794.2903983241. The cubic root of 139105286 is about 518.1409032172.

The spelling of 139105286 in words is "one hundred thirty-nine million, one hundred five thousand, two hundred eighty-six".