689482309 has 16 divisors (see below), whose sum is σ = 719042688. Its totient is φ = 660578112.

The previous prime is 689482303. The next prime is 689482333. The reversal of 689482309 is 903284986.

It is a cyclic number.

It is not a de Polignac number, because 689482309 - 2⁹ = 689481797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689482303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864699 + ... + 865495.

It is an arithmetic number, because the mean of its divisors is an integer number (44940168).

Almost surely, 2^689482309 is an apocalyptic number.

It is an amenable number.

689482309 is a deficient number, since it is larger than the sum of its proper divisors (29560379).

689482309 is a wasteful number, since it uses less digits than its factorization.

689482309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 689482309 is about 26257.9951443365. The cubic root of 689482309 is about 883.4345415146.

The spelling of 689482309 in words is "six hundred eighty-nine million, four hundred eighty-two thousand, three hundred nine".