139396706 has 8 divisors (see below), whose sum is σ = 210599760. Its totient is φ = 69196788.

The previous prime is 139396703. The next prime is 139396717. The reversal of 139396706 is 607693931.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (139396703) 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, 250436 + ... + 250991.

It is an arithmetic number, because the mean of its divisors is an integer number (26324970).

Almost surely, 2^139396706 is an apocalyptic number.

139396706 is a deficient number, since it is larger than the sum of its proper divisors (71203054).

139396706 is a wasteful number, since it uses less digits than its factorization.

139396706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501568.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 139396706 is about 11806.6382175452. The cubic root of 139396706 is about 518.5024789822.

The spelling of 139396706 in words is "one hundred thirty-nine million, three hundred ninety-six thousand, seven hundred six".