40454443404 has 36 divisors (see below), whose sum is σ = 102266422440. Its totient is φ = 13483946880.

The previous prime is 40454443391. The next prime is 40454443423. The reversal of 40454443404 is 40434445404.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×40454443404² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 789444 + ... + 839124.

Almost surely, 2^40454443404 is an apocalyptic number.

It is an amenable number.

40454443404 is an abundant number, since it is smaller than the sum of its proper divisors (61811979036).

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

40454443404 is a wasteful number, since it uses less digits than its factorization.

40454443404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72310 (or 72305 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 36.

Adding to 40454443404 its reverse (40434445404), we get a palindrome (80888888808).

The spelling of 40454443404 in words is "forty billion, four hundred fifty-four million, four hundred forty-three thousand, four hundred four".