139056394 has 8 divisors (see below), whose sum is σ = 208684548. Its totient is φ = 69494880.

The previous prime is 139056389. The next prime is 139056419. The reversal of 139056394 is 493650931.

It can be written as a sum of positive squares in 2 ways, for example, as 138650625 + 405769 = 11775^2 + 637^2 .

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

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, 11067 + ... + 20014.

Almost surely, 2^139056394 is an apocalyptic number.

139056394 is a deficient number, since it is larger than the sum of its proper divisors (69628154).

139056394 is a wasteful number, since it uses less digits than its factorization.

139056394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33320.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 139056394 is about 11792.2175183466. The cubic root of 139056394 is about 518.0801916168.

The spelling of 139056394 in words is "one hundred thirty-nine million, fifty-six thousand, three hundred ninety-four".