139301226 has 36 divisors (see below), whose sum is σ = 310251942. Its totient is φ = 45170784.

The previous prime is 139301221. The next prime is 139301249. The reversal of 139301226 is 622103931.

139301226 is a `hidden beast` number, since 139 + 301 + 226 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 133056225 + 6245001 = 11535^2 + 2499^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139301226.

It is not an unprimeable number, because it can be changed into a prime (139301221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21816 + ... + 27468.

Almost surely, 2^139301226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139301226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155125971).

139301226 is an abundant number, since it is smaller than the sum of its proper divisors (170950716).

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

139301226 is a wasteful number, since it uses less digits than its factorization.

139301226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 139301226 is about 11802.5940369056. The cubic root of 139301226 is about 518.3840689049.

The spelling of 139301226 in words is "one hundred thirty-nine million, three hundred one thousand, two hundred twenty-six".