139118646 has 32 divisors (see below), whose sum is σ = 294445440. Its totient is φ = 43697664.

The previous prime is 139118641. The next prime is 139118653. The reversal of 139118646 is 646811931.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139118641) 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, 18841 + ... + 25163.

It is an arithmetic number, because the mean of its divisors is an integer number (9201420).

Almost surely, 2^139118646 is an apocalyptic number.

139118646 is an abundant number, since it is smaller than the sum of its proper divisors (155326794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139118646 is a wasteful number, since it uses less digits than its factorization.

139118646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6540.

The product of its digits is 31104, while the sum is 39.

The square root of 139118646 is about 11794.8567604698. The cubic root of 139118646 is about 518.1574905113.

The spelling of 139118646 in words is "one hundred thirty-nine million, one hundred eighteen thousand, six hundred forty-six".