40404000440 has 16 divisors (see below), whose sum is σ = 90909001080. Its totient is φ = 16161600160.

The previous prime is 40404000409. The next prime is 40404000457. The reversal of 40404000440 is 4400040404.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505049966 + ... + 505050045.

Almost surely, 2^40404000440 is an apocalyptic number.

40404000440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40404000440 is an abundant number, since it is smaller than the sum of its proper divisors (50505000640).

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

40404000440 is a wasteful number, since it uses less digits than its factorization.

40404000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010100022 (or 1010100018 counting only the distinct ones).

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

Adding to 40404000440 its reverse (4400040404), we get a palindrome (44804040844).

The spelling of 40404000440 in words is "forty billion, four hundred four million, four hundred forty", and thus it is an aban number.