8081091 has 6 divisors (see below), whose sum is σ = 11672700. Its totient is φ = 5387388.

The previous prime is 8081083. The next prime is 8081093. The reversal of 8081091 is 1901808.

It is not a de Polignac number, because 8081091 - 2³ = 8081083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8081093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 448941 + ... + 448958.

It is an arithmetic number, because the mean of its divisors is an integer number (1945450).

Almost surely, 2^8081091 is an apocalyptic number.

8081091 is a deficient number, since it is larger than the sum of its proper divisors (3591609).

8081091 is a wasteful number, since it uses less digits than its factorization.

8081091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897905 (or 897902 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 8081091 is about 2842.7259804631. The cubic root of 8081091 is about 200.6734878582.

Adding to 8081091 its reverse (1901808), we get a palindrome (9982899).

The spelling of 8081091 in words is "eight million, eighty-one thousand, ninety-one".