139260673 has 2 divisors, whose sum is σ = 139260674. Its totient is φ = 139260672.

The previous prime is 139260659. The next prime is 139260683. The reversal of 139260673 is 376062931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110187009 + 29073664 = 10497^2 + 5392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139260673 is a prime.

It is not a weakly prime, because it can be changed into another prime (139260613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69630336 + 69630337.

It is an arithmetic number, because the mean of its divisors is an integer number (69630337).

Almost surely, 2^139260673 is an apocalyptic number.

It is an amenable number.

139260673 is a deficient number, since it is larger than the sum of its proper divisors (1).

139260673 is an equidigital number, since it uses as much as digits as its factorization.

139260673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 139260673 is about 11800.8759420646. The cubic root of 139260673 is about 518.3337604952. Note that the first 3 decimals are identical.

The spelling of 139260673 in words is "one hundred thirty-nine million, two hundred sixty thousand, six hundred seventy-three".