40208863 has 2 divisors, whose sum is σ = 40208864. Its totient is φ = 40208862.

The previous prime is 40208843. The next prime is 40208873. The reversal of 40208863 is 36880204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40208863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40208803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20104431 + 20104432.

It is an arithmetic number, because the mean of its divisors is an integer number (20104432).

Almost surely, 2^40208863 is an apocalyptic number.

40208863 is a deficient number, since it is larger than the sum of its proper divisors (1).

40208863 is an equidigital number, since it uses as much as digits as its factorization.

40208863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 40208863 is about 6341.0458916491. The cubic root of 40208863 is about 342.5894074577.

The spelling of 40208863 in words is "forty million, two hundred eight thousand, eight hundred sixty-three".