40403894720 has 84 divisors (see below), whose sum is σ = 111919862520. Its totient is φ = 13852758528.

The previous prime is 40403894711. The next prime is 40403894731. The reversal of 40403894720 is 2749830404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1272710 + ... + 1304069.

Almost surely, 2^40403894720 is an apocalyptic number.

40403894720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40403894720 is an abundant number, since it is smaller than the sum of its proper divisors (71515967800).

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

40403894720 is a wasteful number, since it uses less digits than its factorization.

40403894720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576810 (or 2576793 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 40403894720 in words is "forty billion, four hundred three million, eight hundred ninety-four thousand, seven hundred twenty".