8489742 has 8 divisors (see below), whose sum is σ = 16979496. Its totient is φ = 2829912.

The previous prime is 8489729. The next prime is 8489743. The reversal of 8489742 is 2479848.

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

8489742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 8489694 and 8489703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8489743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707473 + ... + 707484.

It is an arithmetic number, because the mean of its divisors is an integer number (2122437).

Almost surely, 2^8489742 is an apocalyptic number.

8489742 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.

8489742 is a wasteful number, since it uses less digits than its factorization.

8489742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414962.

The product of its digits is 129024, while the sum is 42.

The square root of 8489742 is about 2913.7161838450. The cubic root of 8489742 is about 204.0006247578. Note that the first 3 decimals are identical.

The spelling of 8489742 in words is "eight million, four hundred eighty-nine thousand, seven hundred forty-two".