40220044400 has 60 divisors (see below), whose sum is σ = 96800830392. Its totient is φ = 16059352320.

The previous prime is 40220044387. The next prime is 40220044427. The reversal of 40220044400 is 444002204.

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 11 ways as a sum of consecutive naturals, for example, 135902 + ... + 314498.

Almost surely, 2^40220044400 is an apocalyptic number.

40220044400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40220044400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48400415196).

40220044400 is an abundant number, since it is smaller than the sum of its proper divisors (56580785992).

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

40220044400 is a wasteful number, since it uses less digits than its factorization.

40220044400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179178 (or 179167 counting only the distinct ones).

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

Adding to 40220044400 its reverse (444002204), we get a palindrome (40664046604).

The spelling of 40220044400 in words is "forty billion, two hundred twenty million, forty-four thousand, four hundred".