139783417 has 2 divisors, whose sum is σ = 139783418. Its totient is φ = 139783416.

The previous prime is 139783381. The next prime is 139783459. The reversal of 139783417 is 714387931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112021056 + 27762361 = 10584^2 + 5269^2 .

It is an emirp because it is prime and its reverse (714387931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139783417 - 2⁷ = 139783289 is a prime.

It is not a weakly prime, because it can be changed into another prime (139783477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69891708 + 69891709.

It is an arithmetic number, because the mean of its divisors is an integer number (69891709).

Almost surely, 2^139783417 is an apocalyptic number.

It is an amenable number.

139783417 is a deficient number, since it is larger than the sum of its proper divisors (1).

139783417 is an equidigital number, since it uses as much as digits as its factorization.

139783417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 139783417 is about 11823.0037215591. The cubic root of 139783417 is about 518.9815086663.

The spelling of 139783417 in words is "one hundred thirty-nine million, seven hundred eighty-three thousand, four hundred seventeen".