8916591 has 4 divisors (see below), whose sum is σ = 11888792. Its totient is φ = 5944392.

The previous prime is 8916587. The next prime is 8916599. The reversal of 8916591 is 1956198.

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

It is not a de Polignac number, because 8916591 - 2² = 8916587 is a prime.

It is a super-2 number, since 2×8916591² = 159011190122562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8916599) 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, 1486096 + ... + 1486101.

It is an arithmetic number, because the mean of its divisors is an integer number (2972198).

Almost surely, 2^8916591 is an apocalyptic number.

8916591 is a deficient number, since it is larger than the sum of its proper divisors (2972201).

8916591 is a wasteful number, since it uses less digits than its factorization.

8916591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972200.

The product of its digits is 19440, while the sum is 39.

The square root of 8916591 is about 2986.0661412635. The cubic root of 8916591 is about 207.3638028188.

The spelling of 8916591 in words is "eight million, nine hundred sixteen thousand, five hundred ninety-one".