40863517 has 2 divisors, whose sum is σ = 40863518. Its totient is φ = 40863516.

The previous prime is 40863497. The next prime is 40863527. The reversal of 40863517 is 71536804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 337561 = 6366^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 40863517 - 2¹⁵ = 40830749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40863527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20431758 + 20431759.

It is an arithmetic number, because the mean of its divisors is an integer number (20431759).

Almost surely, 2^40863517 is an apocalyptic number.

It is an amenable number.

40863517 is a deficient number, since it is larger than the sum of its proper divisors (1).

40863517 is an equidigital number, since it uses as much as digits as its factorization.

40863517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 40863517 is about 6392.4578215269. The cubic root of 40863517 is about 344.4386783364.

The spelling of 40863517 in words is "forty million, eight hundred sixty-three thousand, five hundred seventeen".