40663044 has 36 divisors (see below), whose sum is σ = 104201916. Its totient is φ = 13367808.

The previous prime is 40663043. The next prime is 40663067. The reversal of 40663044 is 44036604.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20142144 + 20520900 = 4488^2 + 4530^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 40662999 and 40663017.

It is not an unprimeable number, because it can be changed into a prime (40663043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5109 + ... + 10364.

Almost surely, 2^40663044 is an apocalyptic number.

It is an amenable number.

40663044 is an abundant number, since it is smaller than the sum of its proper divisors (63538872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40663044 is a wasteful number, since it uses less digits than its factorization.

40663044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15556 (or 15551 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 40663044 is about 6376.7581105135. The cubic root of 40663044 is about 343.8744922529.

Adding to 40663044 its reverse (44036604), we get a palindrome (84699648).

The spelling of 40663044 in words is "forty million, six hundred sixty-three thousand, forty-four".