40717819 has 2 divisors, whose sum is σ = 40717820. Its totient is φ = 40717818.

The previous prime is 40717783. The next prime is 40717823. The reversal of 40717819 is 91871704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40717819 - 2²¹ = 38620667 is a prime.

It is a super-2 number, since 2×40717819² = 3315881568233522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40717829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20358909 + 20358910.

It is an arithmetic number, because the mean of its divisors is an integer number (20358910).

Almost surely, 2^40717819 is an apocalyptic number.

40717819 is a deficient number, since it is larger than the sum of its proper divisors (1).

40717819 is an equidigital number, since it uses as much as digits as its factorization.

40717819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 40717819 is about 6381.0515591084. The cubic root of 40717819 is about 344.0288279203.

The spelling of 40717819 in words is "forty million, seven hundred seventeen thousand, eight hundred nineteen".