139232273 has 2 divisors, whose sum is σ = 139232274. Its totient is φ = 139232272.

The previous prime is 139232263. The next prime is 139232281. The reversal of 139232273 is 372232931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135652609 + 3579664 = 11647^2 + 1892^2 .

It is a cyclic number.

It is not a de Polignac number, because 139232273 - 2⁴ = 139232257 is a prime.

It is not a weakly prime, because it can be changed into another prime (139232213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69616136 + 69616137.

It is an arithmetic number, because the mean of its divisors is an integer number (69616137).

Almost surely, 2^139232273 is an apocalyptic number.

It is an amenable number.

139232273 is a deficient number, since it is larger than the sum of its proper divisors (1).

139232273 is an equidigital number, since it uses as much as digits as its factorization.

139232273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 139232273 is about 11799.6725802032. The cubic root of 139232273 is about 518.2985227901.

The spelling of 139232273 in words is "one hundred thirty-nine million, two hundred thirty-two thousand, two hundred seventy-three".