40208563 has 2 divisors, whose sum is σ = 40208564. Its totient is φ = 40208562.

The previous prime is 40208533. The next prime is 40208573. The reversal of 40208563 is 36580204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40208563 - 2¹⁷ = 40077491 is a prime.

It is not a weakly prime, because it can be changed into another prime (40208533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20104281 + 20104282.

It is an arithmetic number, because the mean of its divisors is an integer number (20104282).

Almost surely, 2^40208563 is an apocalyptic number.

40208563 is a deficient number, since it is larger than the sum of its proper divisors (1).

40208563 is an equidigital number, since it uses as much as digits as its factorization.

40208563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40208563 is about 6341.0222362014. The cubic root of 40208563 is about 342.5885554310.

Adding to 40208563 its reverse (36580204), we get a palindrome (76788767).

The spelling of 40208563 in words is "forty million, two hundred eight thousand, five hundred sixty-three".