4040133491 has 4 divisors (see below), whose sum is σ = 4079358192. Its totient is φ = 4000908792.

The previous prime is 4040133473. The next prime is 4040133509. The reversal of 4040133491 is 1943310404.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4040133473) and next prime (4040133509).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4040133491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040133431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19612196 + ... + 19612401.

It is an arithmetic number, because the mean of its divisors is an integer number (1019839548).

Almost surely, 2^4040133491 is an apocalyptic number.

4040133491 is a deficient number, since it is larger than the sum of its proper divisors (39224701).

4040133491 is a wasteful number, since it uses less digits than its factorization.

4040133491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39224700.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 4040133491 is about 63562.0444211795. The cubic root of 4040133491 is about 1592.6923900589.

Adding to 4040133491 its reverse (1943310404), we get a palindrome (5983443895).

The spelling of 4040133491 in words is "four billion, forty million, one hundred thirty-three thousand, four hundred ninety-one".