40939091 has 8 divisors (see below), whose sum is σ = 43386000. Its totient is φ = 38521440.

The previous prime is 40939079. The next prime is 40939117. The reversal of 40939091 is 19093904.

40939091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40939091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40939051) 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, 4400 + ... + 10061.

It is an arithmetic number, because the mean of its divisors is an integer number (5423250).

Almost surely, 2^40939091 is an apocalyptic number.

40939091 is a deficient number, since it is larger than the sum of its proper divisors (2446909).

40939091 is a wasteful number, since it uses less digits than its factorization.

40939091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14629.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 40939091 is about 6398.3662758551. The cubic root of 40939091 is about 344.6508853762.

The spelling of 40939091 in words is "forty million, nine hundred thirty-nine thousand, ninety-one".