40303505 has 16 divisors (see below), whose sum is σ = 53509248. Its totient is φ = 28896000.

The previous prime is 40303499. The next prime is 40303531. The reversal of 40303505 is 50530304.

It is not a de Polignac number, because 40303505 - 2¹² = 40299409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1256 + ... + 9065.

It is an arithmetic number, because the mean of its divisors is an integer number (3344328).

Almost surely, 2^40303505 is an apocalyptic number.

It is an amenable number.

40303505 is a deficient number, since it is larger than the sum of its proper divisors (13205743).

40303505 is a wasteful number, since it uses less digits than its factorization.

40303505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10408.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 40303505 is about 6348.5041545233. The cubic root of 40303505 is about 342.8579878865.

Adding to 40303505 its reverse (50530304), we get a palindrome (90833809).

The spelling of 40303505 in words is "forty million, three hundred three thousand, five hundred five".