139794447 has 16 divisors (see below), whose sum is σ = 202513248. Its totient is φ = 85263360.

The previous prime is 139794439. The next prime is 139794509. The reversal of 139794447 is 744497931.

It is not a de Polignac number, because 139794447 - 2³ = 139794439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139794396 and 139794405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139794427) 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 15 ways as a sum of consecutive naturals, for example, 11454 + ... + 20267.

It is an arithmetic number, because the mean of its divisors is an integer number (12657078).

Almost surely, 2^139794447 is an apocalyptic number.

139794447 is a deficient number, since it is larger than the sum of its proper divisors (62718801).

139794447 is a wasteful number, since it uses less digits than its factorization.

139794447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31850.

The product of its digits is 762048, while the sum is 48.

The square root of 139794447 is about 11823.4701758832. The cubic root of 139794447 is about 518.9951588680.

The spelling of 139794447 in words is "one hundred thirty-nine million, seven hundred ninety-four thousand, four hundred forty-seven".