139757593 has 2 divisors, whose sum is σ = 139757594. Its totient is φ = 139757592.

The previous prime is 139757581. The next prime is 139757617. The reversal of 139757593 is 395757931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133818624 + 5938969 = 11568^2 + 2437^2 .

It is an emirp because it is prime and its reverse (395757931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139757593 is a prime.

It is not a weakly prime, because it can be changed into another prime (139757533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69878796 + 69878797.

It is an arithmetic number, because the mean of its divisors is an integer number (69878797).

Almost surely, 2^139757593 is an apocalyptic number.

It is an amenable number.

139757593 is a deficient number, since it is larger than the sum of its proper divisors (1).

139757593 is an equidigital number, since it uses as much as digits as its factorization.

139757593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 893025, while the sum is 49.

The square root of 139757593 is about 11821.9115628565. The cubic root of 139757593 is about 518.9495473074.

The spelling of 139757593 in words is "one hundred thirty-nine million, seven hundred fifty-seven thousand, five hundred ninety-three".