139704559 has 2 divisors, whose sum is σ = 139704560. Its totient is φ = 139704558.

The previous prime is 139704533. The next prime is 139704601. The reversal of 139704559 is 955407931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139704559 - 2⁵ = 139704527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139702559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69852279 + 69852280.

It is an arithmetic number, because the mean of its divisors is an integer number (69852280).

Almost surely, 2^139704559 is an apocalyptic number.

139704559 is a deficient number, since it is larger than the sum of its proper divisors (1).

139704559 is an equidigital number, since it uses as much as digits as its factorization.

139704559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 139704559 is about 11819.6683117590. The cubic root of 139704559 is about 518.8838968439.

The spelling of 139704559 in words is "one hundred thirty-nine million, seven hundred four thousand, five hundred fifty-nine".