8864591 has 4 divisors (see below), whose sum is σ = 9250032. Its totient is φ = 8479152.

The previous prime is 8864587. The next prime is 8864641. The reversal of 8864591 is 1954688.

8864591 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8864591 - 2² = 8864587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8864521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192686 + ... + 192731.

It is an arithmetic number, because the mean of its divisors is an integer number (2312508).

Almost surely, 2^8864591 is an apocalyptic number.

8864591 is a deficient number, since it is larger than the sum of its proper divisors (385441).

8864591 is a wasteful number, since it uses less digits than its factorization.

8864591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385440.

The product of its digits is 69120, while the sum is 41.

The square root of 8864591 is about 2977.3463016586. The cubic root of 8864591 is about 206.9599135115.

Subtracting from 8864591 its reverse (1954688), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 8864591 in words is "eight million, eight hundred sixty-four thousand, five hundred ninety-one".