40208886440 has 32 divisors (see below), whose sum is σ = 90503104680. Its totient is φ = 16077668352.

The previous prime is 40208886433. The next prime is 40208886451. The reversal of 40208886440 is 4468880204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36877057156 + 3331829284 = 192034^2 + 57722^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40208886391 and 40208886400.

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 7 ways as a sum of consecutive naturals, for example, 72449 + ... + 292688.

Almost surely, 2^40208886440 is an apocalyptic number.

40208886440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40208886440 is an abundant number, since it is smaller than the sum of its proper divisors (50294218240).

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

40208886440 is a wasteful number, since it uses less digits than its factorization.

40208886440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367901 (or 367897 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The spelling of 40208886440 in words is "forty billion, two hundred eight million, eight hundred eighty-six thousand, four hundred forty".