4400400043600 has 60 divisors (see below), whose sum is σ = 11533048489440. Its totient is φ = 1600145468800.

The previous prime is 4400400043549. The next prime is 4400400043693. The reversal of 4400400043600 is 63400040044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500041060 + ... + 500049859.

It is an arithmetic number, because the mean of its divisors is an integer number (192217474824).

Almost surely, 2^{4400400043600} is an apocalyptic number.

4400400043600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400400043600 is an abundant number, since it is smaller than the sum of its proper divisors (7132648445840).

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

4400400043600 is a wasteful number, since it uses less digits than its factorization.

4400400043600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000090948 (or 1000090937 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 4400400043600 its reverse (63400040044), we get a palindrome (4463800083644).

The spelling of 4400400043600 in words is "four trillion, four hundred billion, four hundred million, forty-three thousand, six hundred".