40408888408 has 24 divisors (see below), whose sum is σ = 88136734500. Its totient is φ = 17318094864.

The previous prime is 40408888397. The next prime is 40408888411. The reversal of 40408888408 is 80488880404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51541558 + ... + 51542341.

Almost surely, 2^40408888408 is an apocalyptic number.

It is an amenable number.

40408888408 is an abundant number, since it is smaller than the sum of its proper divisors (47727846092).

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

40408888408 is a wasteful number, since it uses less digits than its factorization.

40408888408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103083919 (or 103083908 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 52.

The spelling of 40408888408 in words is "forty billion, four hundred eight million, eight hundred eighty-eight thousand, four hundred eight".