40775719 has 2 divisors, whose sum is σ = 40775720. Its totient is φ = 40775718.

The previous prime is 40775717. The next prime is 40775723. The reversal of 40775719 is 91757704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40775719 - 2¹ = 40775717 is a prime.

It is a super-2 number, since 2×40775719² = 3325318519933922, which contains 22 as substring.

Together with 40775717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40775717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20387859 + 20387860.

It is an arithmetic number, because the mean of its divisors is an integer number (20387860).

Almost surely, 2^40775719 is an apocalyptic number.

40775719 is a deficient number, since it is larger than the sum of its proper divisors (1).

40775719 is an equidigital number, since it uses as much as digits as its factorization.

40775719 is an evil number, because the sum of its binary digits is even.

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

The square root of 40775719 is about 6385.5868172001. The cubic root of 40775719 is about 344.1918182725.

The spelling of 40775719 in words is "forty million, seven hundred seventy-five thousand, seven hundred nineteen".