139680433 has 2 divisors, whose sum is σ = 139680434. Its totient is φ = 139680432.

The previous prime is 139680421. The next prime is 139680479. The reversal of 139680433 is 334086931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105842944 + 33837489 = 10288^2 + 5817^2 .

It is a cyclic number.

It is not a de Polignac number, because 139680433 - 2¹³ = 139672241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139680392 and 139680401.

It is not a weakly prime, because it can be changed into another prime (139680833) 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, 69840216 + 69840217.

It is an arithmetic number, because the mean of its divisors is an integer number (69840217).

Almost surely, 2^139680433 is an apocalyptic number.

It is an amenable number.

139680433 is a deficient number, since it is larger than the sum of its proper divisors (1).

139680433 is an equidigital number, since it uses as much as digits as its factorization.

139680433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 139680433 is about 11818.6476806782. The cubic root of 139680433 is about 518.8540259180.

The spelling of 139680433 in words is "one hundred thirty-nine million, six hundred eighty thousand, four hundred thirty-three".