40491912 has 32 divisors (see below), whose sum is σ = 103968000. Its totient is φ = 13132224.

The previous prime is 40491911. The next prime is 40491959. The reversal of 40491912 is 21919404.

40491912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40491912.

It is not an unprimeable number, because it can be changed into a prime (40491911) by changing a digit.

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, 21912 + ... + 23687.

It is an arithmetic number, because the mean of its divisors is an integer number (3249000).

Almost surely, 2^40491912 is an apocalyptic number.

It is an amenable number.

40491912 is an abundant number, since it is smaller than the sum of its proper divisors (63476088).

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

40491912 is a wasteful number, since it uses less digits than its factorization.

40491912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45645 (or 45641 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 40491912 is about 6363.3255456561. The cubic root of 40491912 is about 343.3914108767.

The spelling of 40491912 in words is "forty million, four hundred ninety-one thousand, nine hundred twelve".