139860073 has 2 divisors, whose sum is σ = 139860074. Its totient is φ = 139860072.

The previous prime is 139860041. The next prime is 139860101. The reversal of 139860073 is 370068931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106254864 + 33605209 = 10308^2 + 5797^2 .

It is a cyclic number.

It is not a de Polignac number, because 139860073 - 2⁵ = 139860041 is a prime.

It is not a weakly prime, because it can be changed into another prime (139860013) 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, 69930036 + 69930037.

It is an arithmetic number, because the mean of its divisors is an integer number (69930037).

Almost surely, 2^139860073 is an apocalyptic number.

It is an amenable number.

139860073 is a deficient number, since it is larger than the sum of its proper divisors (1).

139860073 is an equidigital number, since it uses as much as digits as its factorization.

139860073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 139860073 is about 11826.2450930124. The cubic root of 139860073 is about 519.0763596326.

The spelling of 139860073 in words is "one hundred thirty-nine million, eight hundred sixty thousand, seventy-three".