40016863 has 2 divisors, whose sum is σ = 40016864. Its totient is φ = 40016862.

The previous prime is 40016857. The next prime is 40016887. The reversal of 40016863 is 36861004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40016863 is a prime.

It is equal to p_2434618 and since 40016863 and 2434618 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40016833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20008431 + 20008432.

It is an arithmetic number, because the mean of its divisors is an integer number (20008432).

Almost surely, 2^40016863 is an apocalyptic number.

40016863 is a deficient number, since it is larger than the sum of its proper divisors (1).

40016863 is an equidigital number, since it uses as much as digits as its factorization.

40016863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40016863 is about 6325.8883170666. Note that the first 3 decimals coincide. The cubic root of 40016863 is about 342.0432414574.

Adding to 40016863 its reverse (36861004), we get a palindrome (76877867).

The spelling of 40016863 in words is "forty million, sixteen thousand, eight hundred sixty-three".