40019924 has 12 divisors (see below), whose sum is σ = 80039904. Its totient is φ = 17151384.

The previous prime is 40019911. The next prime is 40019933. The reversal of 40019924 is 42991004.

40019924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

40019924 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 714614 + ... + 714669.

It is an arithmetic number, because the mean of its divisors is an integer number (6669992).

Almost surely, 2^40019924 is an apocalyptic number.

It is an amenable number.

40019924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40019924 is a wasteful number, since it uses less digits than its factorization.

40019924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429294 (or 1429292 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40019924 is about 6326.1302547450. The cubic root of 40019924 is about 342.0519625114.

The spelling of 40019924 in words is "forty million, nineteen thousand, nine hundred twenty-four".