139906318 has 16 divisors (see below), whose sum is σ = 214574544. Its totient is φ = 68397120.

The previous prime is 139906313. The next prime is 139906321. The reversal of 139906318 is 813609931.

139906318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139906313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14548 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (13410909).

Almost surely, 2^139906318 is an apocalyptic number.

139906318 is a deficient number, since it is larger than the sum of its proper divisors (74668226).

139906318 is a wasteful number, since it uses less digits than its factorization.

139906318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7827.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 139906318 is about 11828.2001166703. The cubic root of 139906318 is about 519.1335645244.

The spelling of 139906318 in words is "one hundred thirty-nine million, nine hundred six thousand, three hundred eighteen".