40217912 has 32 divisors (see below), whose sum is σ = 88965120. Its totient is φ = 16679520.

The previous prime is 40217909. The next prime is 40217923. The reversal of 40217912 is 21971204.

40217912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9848 + ... + 13319.

It is an arithmetic number, because the mean of its divisors is an integer number (2780160).

Almost surely, 2^40217912 is an apocalyptic number.

It is an amenable number.

40217912 is an abundant number, since it is smaller than the sum of its proper divisors (48747208).

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

40217912 is a wasteful number, since it uses less digits than its factorization.

40217912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23211 (or 23207 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 40217912 is about 6341.7593773337. The cubic root of 40217912 is about 342.6151054323.

The spelling of 40217912 in words is "forty million, two hundred seventeen thousand, nine hundred twelve".