40913663 has 4 divisors (see below), whose sum is σ = 46758480. Its totient is φ = 35068848.

The previous prime is 40913659. The next prime is 40913671. The reversal of 40913663 is 36631904.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40913663 - 2² = 40913659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40913603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2922398 + ... + 2922411.

It is an arithmetic number, because the mean of its divisors is an integer number (11689620).

Almost surely, 2^40913663 is an apocalyptic number.

40913663 is a deficient number, since it is larger than the sum of its proper divisors (5844817).

40913663 is an equidigital number, since it uses as much as digits as its factorization.

40913663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844816.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 40913663 is about 6396.3788974700. The cubic root of 40913663 is about 344.5795143257.

The spelling of 40913663 in words is "forty million, nine hundred thirteen thousand, six hundred sixty-three".