139027793 has 2 divisors, whose sum is σ = 139027794. Its totient is φ = 139027792.

The previous prime is 139027771. The next prime is 139027829. The reversal of 139027793 is 397720931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138462289 + 565504 = 11767^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 139027793 - 2²⁶ = 71918929 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139027793.

It is not a weakly prime, because it can be changed into another prime (139027703) 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, 69513896 + 69513897.

It is an arithmetic number, because the mean of its divisors is an integer number (69513897).

Almost surely, 2^139027793 is an apocalyptic number.

It is an amenable number.

139027793 is a deficient number, since it is larger than the sum of its proper divisors (1).

139027793 is an equidigital number, since it uses as much as digits as its factorization.

139027793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 139027793 is about 11791.0047493842. The cubic root of 139027793 is about 518.0446697513.

The spelling of 139027793 in words is "one hundred thirty-nine million, twenty-seven thousand, seven hundred ninety-three".