40316909 has 4 divisors (see below), whose sum is σ = 40564416. Its totient is φ = 40069404.

The previous prime is 40316869. The next prime is 40316933. The reversal of 40316909 is 90961304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40316909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40316009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123509 + ... + 123834.

It is an arithmetic number, because the mean of its divisors is an integer number (10141104).

Almost surely, 2^40316909 is an apocalyptic number.

It is an amenable number.

40316909 is a deficient number, since it is larger than the sum of its proper divisors (247507).

40316909 is a wasteful number, since it uses less digits than its factorization.

40316909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247506.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 40316909 is about 6349.5597485180. The cubic root of 40316909 is about 342.8959925141.

The spelling of 40316909 in words is "forty million, three hundred sixteen thousand, nine hundred nine".