40533791 has 2 divisors, whose sum is σ = 40533792. Its totient is φ = 40533790.

The previous prime is 40533781. The next prime is 40533799. The reversal of 40533791 is 19733504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40533791 - 2²² = 36339487 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40533799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20266895 + 20266896.

It is an arithmetic number, because the mean of its divisors is an integer number (20266896).

Almost surely, 2^40533791 is an apocalyptic number.

40533791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40533791 is an equidigital number, since it uses as much as digits as its factorization.

40533791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 40533791 is about 6366.6153488333. The cubic root of 40533791 is about 343.5097549541.

The spelling of 40533791 in words is "forty million, five hundred thirty-three thousand, seven hundred ninety-one".