40044440400 has 60 divisors (see below), whose sum is σ = 128275694592. Its totient is φ = 10678517120.

The previous prime is 40044440393. The next prime is 40044440407. The reversal of 40044440400 is 404444004.

It is an interprime number because it is at equal distance from previous prime (40044440393) and next prime (40044440407).

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044440407) by changing a digit.

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, 16683984 + ... + 16686383.

Almost surely, 2^40044440400 is an apocalyptic number.

40044440400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40044440400 is an abundant number, since it is smaller than the sum of its proper divisors (88231254192).

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

40044440400 is a wasteful number, since it uses less digits than its factorization.

40044440400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33370388 (or 33370377 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40044440400 its reverse (404444004), we get a palindrome (40448884404).

The spelling of 40044440400 in words is "forty billion, forty-four million, four hundred forty thousand, four hundred".