8649291 has 16 divisors (see below), whose sum is σ = 13367808. Its totient is φ = 4872000.

The previous prime is 8649283. The next prime is 8649293. The reversal of 8649291 is 1929468.

It is not a de Polignac number, because 8649291 - 2³ = 8649283 is a prime.

8649291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8649293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410 + ... + 4391.

It is an arithmetic number, because the mean of its divisors is an integer number (835488).

Almost surely, 2^8649291 is an apocalyptic number.

8649291 is a deficient number, since it is larger than the sum of its proper divisors (4718517).

8649291 is a wasteful number, since it uses less digits than its factorization.

8649291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882.

The product of its digits is 31104, while the sum is 39.

The square root of 8649291 is about 2940.9676978845. The cubic root of 8649291 is about 205.2706399674.

The spelling of 8649291 in words is "eight million, six hundred forty-nine thousand, two hundred ninety-one".