40988663 has 4 divisors (see below), whose sum is σ = 41762088. Its totient is φ = 40215240.

The previous prime is 40988659. The next prime is 40988669. The reversal of 40988663 is 36688904.

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 40988663 - 2² = 40988659 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 (40988669) 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, 386633 + ... + 386738.

It is an arithmetic number, because the mean of its divisors is an integer number (10440522).

Almost surely, 2^40988663 is an apocalyptic number.

40988663 is a deficient number, since it is larger than the sum of its proper divisors (773425).

40988663 is an equidigital number, since it uses as much as digits as its factorization.

40988663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773424.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 40988663 is about 6402.2389052581. The cubic root of 40988663 is about 344.7899386378.

The spelling of 40988663 in words is "forty million, nine hundred eighty-eight thousand, six hundred sixty-three".