40804191 has 24 divisors (see below), whose sum is σ = 62307440. Its totient is φ = 25732080.

The previous prime is 40804177. The next prime is 40804193. The reversal of 40804191 is 19140804.

It is not a de Polignac number, because 40804191 - 2¹¹ = 40802143 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 (40804193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61401 + ... + 62061.

Almost surely, 2^40804191 is an apocalyptic number.

40804191 is a deficient number, since it is larger than the sum of its proper divisors (21503249).

40804191 is an equidigital number, since it uses as much as digits as its factorization.

40804191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 40804191 is about 6387.8158238947. The cubic root of 40804191 is about 344.2719112758.

Adding to 40804191 its reverse (19140804), we get a palindrome (59944995).

The spelling of 40804191 in words is "forty million, eight hundred four thousand, one hundred ninety-one".