8238091 has 4 divisors (see below), whose sum is σ = 8272800. Its totient is φ = 8203384.

The previous prime is 8238067. The next prime is 8238101. The reversal of 8238091 is 1908328.

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 8238091 - 2¹⁷ = 8107019 is a prime.

It is a super-2 number, since 2×8238091² = 135732286648562, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

8238091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8238011) 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 3 ways as a sum of consecutive naturals, for example, 16996 + ... + 17473.

It is an arithmetic number, because the mean of its divisors is an integer number (2068200).

Almost surely, 2^8238091 is an apocalyptic number.

8238091 is a deficient number, since it is larger than the sum of its proper divisors (34709).

8238091 is a wasteful number, since it uses less digits than its factorization.

8238091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34708.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 8238091 is about 2870.2074837893. The cubic root of 8238091 is about 201.9647276909.

The spelling of 8238091 in words is "eight million, two hundred thirty-eight thousand, ninety-one".