139632226 has 4 divisors (see below), whose sum is σ = 209448342. Its totient is φ = 69816112.

The previous prime is 139632217. The next prime is 139632247. The reversal of 139632226 is 622236931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622236931 = 1319 ⋅471749.

It can be written as a sum of positive squares in only one way, i.e., 89208025 + 50424201 = 9445^2 + 7101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139632191 and 139632200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34908055 + ... + 34908058.

Almost surely, 2^139632226 is an apocalyptic number.

139632226 is a deficient number, since it is larger than the sum of its proper divisors (69816116).

139632226 is an equidigital number, since it uses as much as digits as its factorization.

139632226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69816115.

The product of its digits is 23328, while the sum is 34.

The square root of 139632226 is about 11816.6080581527. The cubic root of 139632226 is about 518.7943294773.

The spelling of 139632226 in words is "one hundred thirty-nine million, six hundred thirty-two thousand, two hundred twenty-six".