40775791 has 6 divisors (see below), whose sum is σ = 47433120. Its totient is φ = 34950636.

The previous prime is 40775759. The next prime is 40775807. The reversal of 40775791 is 19757704.

It is not a de Polignac number, because 40775791 - 2⁵ = 40775759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40775491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 416031 + ... + 416128.

It is an arithmetic number, because the mean of its divisors is an integer number (7905520).

Almost surely, 2^40775791 is an apocalyptic number.

40775791 is a deficient number, since it is larger than the sum of its proper divisors (6657329).

40775791 is an equidigital number, since it uses as much as digits as its factorization.

40775791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832173 (or 832166 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 40775791 is about 6385.5924548941. The cubic root of 40775791 is about 344.1920208587.

The spelling of 40775791 in words is "forty million, seven hundred seventy-five thousand, seven hundred ninety-one".