4040400440 has 32 divisors (see below), whose sum is σ = 9096176880. Its totient is φ = 1615222272.

The previous prime is 4040400389. The next prime is 4040400451. The reversal of 4040400440 is 440040404.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42659 + ... + 99501.

Almost surely, 2^4040400440 is an apocalyptic number.

4040400440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040400440 is an abundant number, since it is smaller than the sum of its proper divisors (5055776440).

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

4040400440 is a wasteful number, since it uses less digits than its factorization.

4040400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58631 (or 58627 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4040400440 is about 63564.1442953494. The cubic root of 4040400440 is about 1592.7274679656.

Adding to 4040400440 its reverse (440040404), we get a palindrome (4480440844).

The spelling of 4040400440 in words is "four billion, forty million, four hundred thousand, four hundred forty".