689496350429 has 2 divisors, whose sum is σ = 689496350430. Its totient is φ = 689496350428.

The previous prime is 689496350383. The next prime is 689496350443. The reversal of 689496350429 is 924053694986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642482402500 + 47013947929 = 801550^2 + 216827^2 .

It is a cyclic number.

It is not a de Polignac number, because 689496350429 - 2⁸ = 689496350173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689496350479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344748175214 + 344748175215.

It is an arithmetic number, because the mean of its divisors is an integer number (344748175215).

Almost surely, 2^689496350429 is an apocalyptic number.

It is an amenable number.

689496350429 is a deficient number, since it is larger than the sum of its proper divisors (1).

689496350429 is an equidigital number, since it uses as much as digits as its factorization.

689496350429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100776960, while the sum is 65.

The spelling of 689496350429 in words is "six hundred eighty-nine billion, four hundred ninety-six million, three hundred fifty thousand, four hundred twenty-nine".