689215239 has 12 divisors (see below), whose sum is σ = 1001035672. Its totient is φ = 456937200.

The previous prime is 689215231. The next prime is 689215273. The reversal of 689215239 is 932512986.

It is not a de Polignac number, because 689215239 - 2³ = 689215231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 689215194 and 689215203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689215231) 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 in 11 ways as a sum of consecutive naturals, for example, 209917 + ... + 213174.

Almost surely, 2^689215239 is an apocalyptic number.

689215239 is a deficient number, since it is larger than the sum of its proper divisors (311820433).

689215239 is a wasteful number, since it uses less digits than its factorization.

689215239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423278 (or 423275 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 689215239 is about 26252.9091530824. The cubic root of 689215239 is about 883.3204610758.

The spelling of 689215239 in words is "six hundred eighty-nine million, two hundred fifteen thousand, two hundred thirty-nine".