40791996 has 36 divisors (see below), whose sum is σ = 117844272. Its totient is φ = 11654784.

The previous prime is 40791991. The next prime is 40792021. The reversal of 40791996 is 69919704.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40791991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80685 + ... + 81188.

It is an arithmetic number, because the mean of its divisors is an integer number (3273452).

Almost surely, 2^40791996 is an apocalyptic number.

It is an amenable number.

40791996 is an abundant number, since it is smaller than the sum of its proper divisors (77052276).

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

40791996 is a wasteful number, since it uses less digits than its factorization.

40791996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161890 (or 161885 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 40791996 is about 6386.8612009343. The cubic root of 40791996 is about 344.2376107610.

The spelling of 40791996 in words is "forty million, seven hundred ninety-one thousand, nine hundred ninety-six".