689243442 has 8 divisors (see below), whose sum is σ = 1378486896. Its totient is φ = 229747812.

The previous prime is 689243441. The next prime is 689243483. The reversal of 689243442 is 244342986.

It is a sphenic number, since it is the product of 3 distinct primes.

689243442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 689243394 and 689243403.

It is not an unprimeable number, because it can be changed into a prime (689243441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57436948 + ... + 57436959.

It is an arithmetic number, because the mean of its divisors is an integer number (172310862).

Almost surely, 2^689243442 is an apocalyptic number.

689243442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689243442 is a wasteful number, since it uses less digits than its factorization.

689243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114873912.

The product of its digits is 331776, while the sum is 42.

The square root of 689243442 is about 26253.4462880590. The cubic root of 689243442 is about 883.3325095360.

The spelling of 689243442 in words is "six hundred eighty-nine million, two hundred forty-three thousand, four hundred forty-two".