139222927 has 2 divisors, whose sum is σ = 139222928. Its totient is φ = 139222926.

The previous prime is 139222907. The next prime is 139222931. The reversal of 139222927 is 729222931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139222927 - 2¹⁹ = 138698639 is a prime.

It is a Chen prime.

It is equal to p_7870645 and since 139222927 and 7870645 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139222907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69611463 + 69611464.

It is an arithmetic number, because the mean of its divisors is an integer number (69611464).

Almost surely, 2^139222927 is an apocalyptic number.

139222927 is a deficient number, since it is larger than the sum of its proper divisors (1).

139222927 is an equidigital number, since it uses as much as digits as its factorization.

139222927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 139222927 is about 11799.2765456192. The cubic root of 139222927 is about 518.2869255593.

The spelling of 139222927 in words is "one hundred thirty-nine million, two hundred twenty-two thousand, nine hundred twenty-seven".