139786422 has 16 divisors (see below), whose sum is σ = 281190960. Its totient is φ = 46325792.

The previous prime is 139786417. The next prime is 139786453. The reversal of 139786422 is 224687931.

139786422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66297 + ... + 68372.

It is an arithmetic number, because the mean of its divisors is an integer number (17574435).

Almost surely, 2^139786422 is an apocalyptic number.

139786422 is an abundant number, since it is smaller than the sum of its proper divisors (141404538).

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

139786422 is a wasteful number, since it uses less digits than its factorization.

139786422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134847.

The product of its digits is 145152, while the sum is 42.

The square root of 139786422 is about 11823.1308036408. The cubic root of 139786422 is about 518.9852275821.

The spelling of 139786422 in words is "one hundred thirty-nine million, seven hundred eighty-six thousand, four hundred twenty-two".