40635863 has 2 divisors, whose sum is σ = 40635864. Its totient is φ = 40635862.

The previous prime is 40635827. The next prime is 40635883. The reversal of 40635863 is 36853604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40635863 - 2⁶ = 40635799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40635883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20317931 + 20317932.

It is an arithmetic number, because the mean of its divisors is an integer number (20317932).

Almost surely, 2^40635863 is an apocalyptic number.

40635863 is a deficient number, since it is larger than the sum of its proper divisors (1).

40635863 is an equidigital number, since it uses as much as digits as its factorization.

40635863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 40635863 is about 6374.6264988625. The cubic root of 40635863 is about 343.7978548032.

The spelling of 40635863 in words is "forty million, six hundred thirty-five thousand, eight hundred sixty-three".