40100791 has 2 divisors, whose sum is σ = 40100792. Its totient is φ = 40100790.

The previous prime is 40100779. The next prime is 40100813. The reversal of 40100791 is 19700104.

It is an a-pointer prime, because the next prime (40100813) can be obtained adding 40100791 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40100791 - 2⁷ = 40100663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050395 + 20050396.

It is an arithmetic number, because the mean of its divisors is an integer number (20050396).

Almost surely, 2^40100791 is an apocalyptic number.

40100791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100791 is an equidigital number, since it uses as much as digits as its factorization.

40100791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 40100791 is about 6332.5185353065. The cubic root of 40100791 is about 342.2821987132.

Adding to 40100791 its reverse (19700104), we get a palindrome (59800895).

The spelling of 40100791 in words is "forty million, one hundred thousand, seven hundred ninety-one".