139952317 has 2 divisors, whose sum is σ = 139952318. Its totient is φ = 139952316.

The previous prime is 139952303. The next prime is 139952339. The reversal of 139952317 is 713259931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120362841 + 19589476 = 10971^2 + 4426^2 .

It is a cyclic number.

It is not a de Polignac number, because 139952317 - 2²³ = 131563709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139952317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139952357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69976158 + 69976159.

It is an arithmetic number, because the mean of its divisors is an integer number (69976159).

Almost surely, 2^139952317 is an apocalyptic number.

It is an amenable number.

139952317 is a deficient number, since it is larger than the sum of its proper divisors (1).

139952317 is an equidigital number, since it uses as much as digits as its factorization.

139952317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 139952317 is about 11830.1444200821. The cubic root of 139952317 is about 519.1904526110.

The spelling of 139952317 in words is "one hundred thirty-nine million, nine hundred fifty-two thousand, three hundred seventeen".