139784226 has 16 divisors (see below), whose sum is σ = 280064928. Its totient is φ = 46512000.

The previous prime is 139784221. The next prime is 139784233. The reversal of 139784226 is 622487931.

It is not an unprimeable number, because it can be changed into a prime (139784221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16975 + ... + 23826.

It is an arithmetic number, because the mean of its divisors is an integer number (17504058).

Almost surely, 2^139784226 is an apocalyptic number.

139784226 is an abundant number, since it is smaller than the sum of its proper divisors (140280702).

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

139784226 is a wasteful number, since it uses less digits than its factorization.

139784226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41377.

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

The square root of 139784226 is about 11823.0379344735. The cubic root of 139784226 is about 518.9825098705.

The spelling of 139784226 in words is "one hundred thirty-nine million, seven hundred eighty-four thousand, two hundred twenty-six".