689503174439 has 2 divisors, whose sum is σ = 689503174440. Its totient is φ = 689503174438.

The previous prime is 689503174397. The next prime is 689503174531. The reversal of 689503174439 is 934471305986.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689503174439 is a prime.

It is a super-2 number, since 2×689503174439² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689503173439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344751587219 + 344751587220.

It is an arithmetic number, because the mean of its divisors is an integer number (344751587220).

Almost surely, 2^689503174439 is an apocalyptic number.

689503174439 is a deficient number, since it is larger than the sum of its proper divisors (1).

689503174439 is an equidigital number, since it uses as much as digits as its factorization.

689503174439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 689503174439 in words is "six hundred eighty-nine billion, five hundred three million, one hundred seventy-four thousand, four hundred thirty-nine".