139197017 has 2 divisors, whose sum is σ = 139197018. Its totient is φ = 139197016.

The previous prime is 139197007. The next prime is 139197029. The reversal of 139197017 is 710791931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133726096 + 5470921 = 11564^2 + 2339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139197017 is a prime.

It is not a weakly prime, because it can be changed into another prime (139197007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69598508 + 69598509.

It is an arithmetic number, because the mean of its divisors is an integer number (69598509).

Almost surely, 2^139197017 is an apocalyptic number.

It is an amenable number.

139197017 is a deficient number, since it is larger than the sum of its proper divisors (1).

139197017 is an equidigital number, since it uses as much as digits as its factorization.

139197017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 38.

The square root of 139197017 is about 11798.1785458604. The cubic root of 139197017 is about 518.2547717379.

The spelling of 139197017 in words is "one hundred thirty-nine million, one hundred ninety-seven thousand, seventeen".