40443968 has 14 divisors (see below), whose sum is σ = 80256126. Its totient is φ = 20221952.

The previous prime is 40443937. The next prime is 40444007. The reversal of 40443968 is 86934404.

It can be written as a sum of positive squares in only one way, i.e., 27541504 + 12902464 = 5248^2 + 3592^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315905 + ... + 316032.

Almost surely, 2^40443968 is an apocalyptic number.

It is an amenable number.

40443968 is a deficient number, since it is larger than the sum of its proper divisors (39812158).

40443968 is an equidigital number, since it uses as much as digits as its factorization.

40443968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631949 (or 631939 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 40443968 is about 6359.5572172912. The cubic root of 40443968 is about 343.2558277516.

It can be divided in two parts, 4044396 and 8, that added together give a palindrome (4044404).

The spelling of 40443968 in words is "forty million, four hundred forty-three thousand, nine hundred sixty-eight".