139891106 has 8 divisors (see below), whose sum is σ = 218960064. Its totient is φ = 66904420.

The previous prime is 139891061. The next prime is 139891121. The reversal of 139891106 is 601198931.

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 139891106.

It is an unprimeable number.

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, 1520510 + ... + 1520601.

It is an arithmetic number, because the mean of its divisors is an integer number (27370008).

Almost surely, 2^139891106 is an apocalyptic number.

139891106 is a deficient number, since it is larger than the sum of its proper divisors (79068958).

139891106 is a wasteful number, since it uses less digits than its factorization.

139891106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041136.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 139891106 is about 11827.5570596806. The cubic root of 139891106 is about 519.1147487288.

The spelling of 139891106 in words is "one hundred thirty-nine million, eight hundred ninety-one thousand, one hundred six".