40040305 has 8 divisors (see below), whose sum is σ = 48399912. Its totient is φ = 31797888.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040305 is 50304004.

It can be written as a sum of positive squares in 4 ways, for example, as 85264 + 39955041 = 292^2 + 6321^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40040305 - 2⁷ = 40040177 is a prime.

It is a Duffinian 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, 28542 + ... + 29911.

It is an arithmetic number, because the mean of its divisors is an integer number (6049989).

Almost surely, 2^40040305 is an apocalyptic number.

It is an amenable number.

40040305 is a deficient number, since it is larger than the sum of its proper divisors (8359607).

40040305 is a wasteful number, since it uses less digits than its factorization.

40040305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58595.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40040305 is about 6327.7409080967. The cubic root of 40040305 is about 342.1100184100.

Adding to 40040305 its reverse (50304004), we get a palindrome (90344309).

The spelling of 40040305 in words is "forty million, forty thousand, three hundred five".