8040440091 has 8 divisors (see below), whose sum is σ = 10754839120. Its totient is φ = 5343167232.

The previous prime is 8040440069. The next prime is 8040440099. The reversal of 8040440091 is 1900440408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8040440091 - 2⁷ = 8040439963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8040440099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4280446 + ... + 4282323.

It is an arithmetic number, because the mean of its divisors is an integer number (1344354890).

Almost surely, 2^8040440091 is an apocalyptic number.

8040440091 is a deficient number, since it is larger than the sum of its proper divisors (2714399029).

8040440091 is a wasteful number, since it uses less digits than its factorization.

8040440091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563085.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 8040440091 is about 89668.5011082487. The cubic root of 8040440091 is about 2003.3643450013.

Adding to 8040440091 its reverse (1900440408), we get a palindrome (9940880499).

The spelling of 8040440091 in words is "eight billion, forty million, four hundred forty thousand, ninety-one".