139922406 has 48 divisors (see below), whose sum is σ = 337034880. Its totient is φ = 41662080.

The previous prime is 139922401. The next prime is 139922407. The reversal of 139922406 is 604229931.

139922406 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 not an unprimeable number, because it can be changed into a prime (139922401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2391 + ... + 16898.

It is an arithmetic number, because the mean of its divisors is an integer number (7021560).

Almost surely, 2^139922406 is an apocalyptic number.

139922406 is an abundant number, since it is smaller than the sum of its proper divisors (197112474).

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

139922406 is a wasteful number, since it uses less digits than its factorization.

139922406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19341 (or 19338 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 139922406 is about 11828.8801667783. The cubic root of 139922406 is about 519.1534623646.

The spelling of 139922406 in words is "one hundred thirty-nine million, nine hundred twenty-two thousand, four hundred six".