40400448405 has 32 divisors (see below), whose sum is σ = 71418910464. Its totient is φ = 19397723136.

The previous prime is 40400448397. The next prime is 40400448421. The reversal of 40400448405 is 50484400404.

40400448405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40400448405 - 2³ = 40400448397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3438334 + ... + 3450063.

It is an arithmetic number, because the mean of its divisors is an integer number (2231840952).

Almost surely, 2^40400448405 is an apocalyptic number.

It is an amenable number.

40400448405 is a deficient number, since it is larger than the sum of its proper divisors (31018462059).

40400448405 is a wasteful number, since it uses less digits than its factorization.

40400448405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888445.

The product of its (nonzero) digits is 40960, while the sum is 33.

Adding to 40400448405 its reverse (50484400404), we get a palindrome (90884848809).

The spelling of 40400448405 in words is "forty billion, four hundred million, four hundred forty-eight thousand, four hundred five".