139243227 has 16 divisors (see below), whose sum is σ = 192310272. Its totient is φ = 89523360.

The previous prime is 139243213. The next prime is 139243231. The reversal of 139243227 is 722342931.

It is not a de Polignac number, because 139243227 - 2⁶ = 139243163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139243327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26113 + ... + 30989.

It is an arithmetic number, because the mean of its divisors is an integer number (12019392).

Almost surely, 2^139243227 is an apocalyptic number.

139243227 is a deficient number, since it is larger than the sum of its proper divisors (53067045).

139243227 is a wasteful number, since it uses less digits than its factorization.

139243227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218.

The product of its digits is 18144, while the sum is 33.

The square root of 139243227 is about 11800.1367364959. The cubic root of 139243227 is about 518.3121146894.

The spelling of 139243227 in words is "one hundred thirty-nine million, two hundred forty-three thousand, two hundred twenty-seven".