8612291 has 4 divisors (see below), whose sum is σ = 8619072. Its totient is φ = 8605512.

The previous prime is 8612243. The next prime is 8612293. The reversal of 8612291 is 1922168.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8612291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8612293) 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, 851 + ... + 4236.

It is an arithmetic number, because the mean of its divisors is an integer number (2154768).

Almost surely, 2^8612291 is an apocalyptic number.

8612291 is a deficient number, since it is larger than the sum of its proper divisors (6781).

8612291 is a wasteful number, since it uses less digits than its factorization.

8612291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780.

The product of its digits is 1728, while the sum is 29.

The square root of 8612291 is about 2934.6705096143. The cubic root of 8612291 is about 204.9775188514.

The spelling of 8612291 in words is "eight million, six hundred twelve thousand, two hundred ninety-one".