8389240 has 32 divisors (see below), whose sum is σ = 19031760. Its totient is φ = 3328000.

The previous prime is 8389237. The next prime is 8389261. The reversal of 8389240 is 429838.

It is a d-powerful number, because it can be written as 8 + 3³ + 8³ + 9² + 2²³ + 4 + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 8389196 and 8389205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4440 + ... + 6040.

Almost surely, 2^8389240 is an apocalyptic number.

It is an amenable number.

8389240 is an abundant number, since it is smaller than the sum of its proper divisors (10642520).

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

8389240 is a wasteful number, since it uses less digits than its factorization.

8389240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743 (or 1739 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 8389240 is about 2896.4184780518. The cubic root of 8389240 is about 203.1924372534.

The spelling of 8389240 in words is "eight million, three hundred eighty-nine thousand, two hundred forty".