8740489 has 4 divisors (see below), whose sum is σ = 8799300. Its totient is φ = 8681680.

The previous prime is 8740453. The next prime is 8740493. The reversal of 8740489 is 9840478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9840478 = 2 ⋅4920239.

It can be written as a sum of positive squares in 2 ways, for example, as 855625 + 7884864 = 925^2 + 2808^2 .

It is a cyclic number.

It is not a de Polignac number, because 8740489 - 2²¹ = 6643337 is a prime.

It is a super-2 number, since 2×8740489² = 152792295918242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8740429) 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, 29182 + ... + 29479.

It is an arithmetic number, because the mean of its divisors is an integer number (2199825).

Almost surely, 2^8740489 is an apocalyptic number.

It is an amenable number.

8740489 is a deficient number, since it is larger than the sum of its proper divisors (58811).

8740489 is a wasteful number, since it uses less digits than its factorization.

8740489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58810.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 8740489 is about 2956.4318020208. The cubic root of 8740489 is about 205.9895759328.

It can be divided in two parts, 8740 and 489, that added together give a palindrome (9229).

The spelling of 8740489 in words is "eight million, seven hundred forty thousand, four hundred eighty-nine".