40817797 has 2 divisors, whose sum is σ = 40817798. Its totient is φ = 40817796.

The previous prime is 40817783. The next prime is 40817813. The reversal of 40817797 is 79771804.

40817797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34269316 + 6548481 = 5854^2 + 2559^2 .

It is a cyclic number.

It is not a de Polignac number, because 40817797 - 2¹⁵ = 40785029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40817717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20408898 + 20408899.

It is an arithmetic number, because the mean of its divisors is an integer number (20408899).

Almost surely, 2^40817797 is an apocalyptic number.

It is an amenable number.

40817797 is a deficient number, since it is larger than the sum of its proper divisors (1).

40817797 is an equidigital number, since it uses as much as digits as its factorization.

40817797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 40817797 is about 6388.8807313958. The cubic root of 40817797 is about 344.3101724035.

It can be divided in two parts, 40817 and 797, that added together give a palindrome (41614).

The spelling of 40817797 in words is "forty million, eight hundred seventeen thousand, seven hundred ninety-seven".