139505633 has 2 divisors, whose sum is σ = 139505634. Its totient is φ = 139505632.

The previous prime is 139505627. The next prime is 139505683. The reversal of 139505633 is 336505931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122058304 + 17447329 = 11048^2 + 4177^2 .

It is a cyclic number.

It is not a de Polignac number, because 139505633 - 2¹⁶ = 139440097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139505593 and 139505602.

It is not a weakly prime, because it can be changed into another prime (139505623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69752816 + 69752817.

It is an arithmetic number, because the mean of its divisors is an integer number (69752817).

Almost surely, 2^139505633 is an apocalyptic number.

It is an amenable number.

139505633 is a deficient number, since it is larger than the sum of its proper divisors (1).

139505633 is an equidigital number, since it uses as much as digits as its factorization.

139505633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 35.

The square root of 139505633 is about 11811.2502725156. The cubic root of 139505633 is about 518.6374994245.

The spelling of 139505633 in words is "one hundred thirty-nine million, five hundred five thousand, six hundred thirty-three".