40835791 has 2 divisors, whose sum is σ = 40835792. Its totient is φ = 40835790.

The previous prime is 40835789. The next prime is 40835849. The reversal of 40835791 is 19753804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40835791 - 2¹ = 40835789 is a prime.

Together with 40835789, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40835791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40835761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20417895 + 20417896.

It is an arithmetic number, because the mean of its divisors is an integer number (20417896).

Almost surely, 2^40835791 is an apocalyptic number.

40835791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40835791 is an equidigital number, since it uses as much as digits as its factorization.

40835791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 40835791 is about 6390.2888041152. The cubic root of 40835791 is about 344.3607598720.

The spelling of 40835791 in words is "forty million, eight hundred thirty-five thousand, seven hundred ninety-one".