40911988 has 18 divisors (see below), whose sum is σ = 77190386. Its totient is φ = 18861168.

The previous prime is 40911977. The next prime is 40912007. The reversal of 40911988 is 88911904.

It can be written as a sum of positive squares in only one way, i.e., 28323684 + 12588304 = 5322^2 + 3548^2 .

It is a super-2 number, since 2×40911988² = 3347581524224288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40911988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45681 + ... + 46567.

Almost surely, 2^40911988 is an apocalyptic number.

It is an amenable number.

40911988 is a deficient number, since it is larger than the sum of its proper divisors (36278398).

40911988 is an equidigital number, since it uses as much as digits as its factorization.

40911988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 40911988 is about 6396.2479626731. The cubic root of 40911988 is about 344.5748119148.

The spelling of 40911988 in words is "forty million, nine hundred eleven thousand, nine hundred eighty-eight".