139404226 has 8 divisors (see below), whose sum is σ = 225191484. Its totient is φ = 64340400.

The previous prime is 139404203. The next prime is 139404259. The reversal of 139404226 is 622404931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 139263601 + 140625 = 11801^2 + 375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680825 + ... + 2680876.

Almost surely, 2^139404226 is an apocalyptic number.

139404226 is a deficient number, since it is larger than the sum of its proper divisors (85787258).

139404226 is a wasteful number, since it uses less digits than its factorization.

139404226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361716.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 139404226 is about 11806.9566781622. The cubic root of 139404226 is about 518.5118026567.

The spelling of 139404226 in words is "one hundred thirty-nine million, four hundred four thousand, two hundred twenty-six".