139239226 has 16 divisors (see below), whose sum is σ = 238875840. Its totient is φ = 59628960.

The previous prime is 139239187. The next prime is 139239229. The reversal of 139239226 is 622932931.

139239226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139239229) 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, 21205 + ... + 26983.

It is an arithmetic number, because the mean of its divisors is an integer number (14929740).

Almost surely, 2^139239226 is an apocalyptic number.

139239226 is a deficient number, since it is larger than the sum of its proper divisors (99636614).

139239226 is a wasteful number, since it uses less digits than its factorization.

139239226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509.

The product of its digits is 34992, while the sum is 37.

The square root of 139239226 is about 11799.9672033443. The cubic root of 139239226 is about 518.3071502669.

The spelling of 139239226 in words is "one hundred thirty-nine million, two hundred thirty-nine thousand, two hundred twenty-six".