139995073 has 2 divisors, whose sum is σ = 139995074. Its totient is φ = 139995072.

The previous prime is 139995067. The next prime is 139995083. The reversal of 139995073 is 370599931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139405249 + 589824 = 11807^2 + 768^2 .

It is a cyclic number.

It is not a de Polignac number, because 139995073 - 2¹⁷ = 139864001 is a prime.

It is not a weakly prime, because it can be changed into another prime (139995083) 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, 69997536 + 69997537.

It is an arithmetic number, because the mean of its divisors is an integer number (69997537).

Almost surely, 2^139995073 is an apocalyptic number.

It is an amenable number.

139995073 is a deficient number, since it is larger than the sum of its proper divisors (1).

139995073 is an equidigital number, since it uses as much as digits as its factorization.

139995073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 229635, while the sum is 46.

The square root of 139995073 is about 11831.9513606167. The cubic root of 139995073 is about 519.2433188235.

The spelling of 139995073 in words is "one hundred thirty-nine million, nine hundred ninety-five thousand, seventy-three".