40400000440 has 16 divisors (see below), whose sum is σ = 90900001080. Its totient is φ = 16160000160.

The previous prime is 40400000423. The next prime is 40400000441. The reversal of 40400000440 is 4400000404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400000441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504999966 + ... + 505000045.

Almost surely, 2^40400000440 is an apocalyptic number.

40400000440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40400000440 is an abundant number, since it is smaller than the sum of its proper divisors (50500000640).

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

40400000440 is a wasteful number, since it uses less digits than its factorization.

40400000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010000022 (or 1010000018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 40400000440 its reverse (4400000404), we get a palindrome (44800000844).

The spelling of 40400000440 in words is "forty billion, four hundred million, four hundred forty", and thus it is an aban number.