40908039 has 4 divisors (see below), whose sum is σ = 54544056. Its totient is φ = 27272024.

The previous prime is 40908013. The next prime is 40908041. The reversal of 40908039 is 93080904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40908039 - 2⁹ = 40907527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40908059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6818004 + ... + 6818009.

It is an arithmetic number, because the mean of its divisors is an integer number (13636014).

Almost surely, 2^40908039 is an apocalyptic number.

40908039 is a deficient number, since it is larger than the sum of its proper divisors (13636017).

40908039 is a wasteful number, since it uses less digits than its factorization.

40908039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636016.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 40908039 is about 6395.9392586234. The cubic root of 40908039 is about 344.5637249467.

The spelling of 40908039 in words is "forty million, nine hundred eight thousand, thirty-nine".