40104440 has 32 divisors (see below), whose sum is σ = 94986000. Its totient is φ = 15197184.

The previous prime is 40104431. The next prime is 40104443. The reversal of 40104440 is 4440104.

It is a super-2 number, since 2×40104440² = 3216732215427200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40104443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25625 + ... + 27144.

Almost surely, 2^40104440 is an apocalyptic number.

40104440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40104440 is an abundant number, since it is smaller than the sum of its proper divisors (54881560).

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

40104440 is a wasteful number, since it uses less digits than its factorization.

40104440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52799 (or 52795 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40104440 is about 6332.8066447666. The cubic root of 40104440 is about 342.2925804690.

Adding to 40104440 its reverse (4440104), we get a palindrome (44544544).

The spelling of 40104440 in words is "forty million, one hundred four thousand, four hundred forty".