40634963 has 2 divisors, whose sum is σ = 40634964. Its totient is φ = 40634962.

The previous prime is 40634959. The next prime is 40635037. The reversal of 40634963 is 36943604.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40634963 - 2² = 40634959 is a prime.

It is a super-2 number, since 2×40634963² = 3302400436022738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40634263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20317481 + 20317482.

It is an arithmetic number, because the mean of its divisors is an integer number (20317482).

Almost surely, 2^40634963 is an apocalyptic number.

40634963 is a deficient number, since it is larger than the sum of its proper divisors (1).

40634963 is an equidigital number, since it uses as much as digits as its factorization.

40634963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 40634963 is about 6374.5559061004. Note that the first 3 decimals coincide. The cubic root of 40634963 is about 343.7953166482.

The spelling of 40634963 in words is "forty million, six hundred thirty-four thousand, nine hundred sixty-three".