40729912 has 32 divisors (see below), whose sum is σ = 78321600. Its totient is φ = 19851264.

The previous prime is 40729907. The next prime is 40729937. The reversal of 40729912 is 21992704.

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 7 ways as a sum of consecutive naturals, for example, 56289 + ... + 57007.

It is an arithmetic number, because the mean of its divisors is an integer number (2447550).

Almost surely, 2^40729912 is an apocalyptic number.

It is an amenable number.

40729912 is a deficient number, since it is larger than the sum of its proper divisors (37591688).

40729912 is a wasteful number, since it uses less digits than its factorization.

40729912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 40729912 is about 6381.9990598558. Note that the first 3 decimals coincide. The cubic root of 40729912 is about 344.0628828617.

The spelling of 40729912 in words is "forty million, seven hundred twenty-nine thousand, nine hundred twelve".