8240591 has 4 divisors (see below), whose sum is σ = 8250192. Its totient is φ = 8230992.

The previous prime is 8240587. The next prime is 8240621. The reversal of 8240591 is 1950428.

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 8240591 - 2² = 8240587 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 (8240501) 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, 3371 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (2062548).

Almost surely, 2^8240591 is an apocalyptic number.

8240591 is a deficient number, since it is larger than the sum of its proper divisors (9601).

8240591 is an equidigital number, since it uses as much as digits as its factorization.

8240591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 8240591 is about 2870.6429593386. The cubic root of 8240591 is about 201.9851555931.

The spelling of 8240591 in words is "eight million, two hundred forty thousand, five hundred ninety-one".