8540389 has 8 divisors (see below), whose sum is σ = 10033632. Its totient is φ = 7166640.

The previous prime is 8540387. The next prime is 8540393. The reversal of 8540389 is 9830458.

8540389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8540389 - 2¹ = 8540387 is a prime.

It is a Duffinian number.

8540389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29719 + ... + 30004.

It is an arithmetic number, because the mean of its divisors is an integer number (1254204).

Almost surely, 2^8540389 is an apocalyptic number.

It is an amenable number.

8540389 is a deficient number, since it is larger than the sum of its proper divisors (1493243).

8540389 is a wasteful number, since it uses less digits than its factorization.

8540389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59747.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 8540389 is about 2922.3943950124. The cubic root of 8540389 is about 204.4054875385.

The spelling of 8540389 in words is "eight million, five hundred forty thousand, three hundred eighty-nine".