8649389 has 8 divisors (see below), whose sum is σ = 10405440. Its totient is φ = 7023456.

The previous prime is 8649383. The next prime is 8649391. The reversal of 8649389 is 9839468.

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

It is a cyclic number.

It is not a de Polignac number, because 8649389 - 2¹² = 8645293 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8649383) 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, 32384 + ... + 32649.

It is an arithmetic number, because the mean of its divisors is an integer number (1300680).

Almost surely, 2^8649389 is an apocalyptic number.

It is an amenable number.

8649389 is a deficient number, since it is larger than the sum of its proper divisors (1756051).

8649389 is a wasteful number, since it uses less digits than its factorization.

8649389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65059.

The product of its digits is 373248, while the sum is 47.

The square root of 8649389 is about 2940.9843590200. The cubic root of 8649389 is about 205.2714152312.

The spelling of 8649389 in words is "eight million, six hundred forty-nine thousand, three hundred eighty-nine".