40309841 has 8 divisors (see below), whose sum is σ = 47357184. Its totient is φ = 33826320.

The previous prime is 40309817. The next prime is 40309853. The reversal of 40309841 is 14890304.

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

It is not a de Polignac number, because 40309841 - 2¹⁸ = 40047697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40309891) 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 7 ways as a sum of consecutive naturals, for example, 140801 + ... + 141086.

It is an arithmetic number, because the mean of its divisors is an integer number (5919648).

Almost surely, 2^40309841 is an apocalyptic number.

It is an amenable number.

40309841 is a deficient number, since it is larger than the sum of its proper divisors (7047343).

40309841 is a wasteful number, since it uses less digits than its factorization.

40309841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281911.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40309841 is about 6349.0031501016. The cubic root of 40309841 is about 342.8759535232.

The spelling of 40309841 in words is "forty million, three hundred nine thousand, eight hundred forty-one".