40216709 has 8 divisors (see below), whose sum is σ = 43653120. Its totient is φ = 36829296.

The previous prime is 40216681. The next prime is 40216717. The reversal of 40216709 is 90761204.

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 40216709 - 2¹⁶ = 40151173 is a prime.

It is a Duffinian number.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40216789) 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, 10529 + ... + 13830.

It is an arithmetic number, because the mean of its divisors is an integer number (5456640).

Almost surely, 2^40216709 is an apocalyptic number.

It is an amenable number.

40216709 is a deficient number, since it is larger than the sum of its proper divisors (3436411).

40216709 is a wasteful number, since it uses less digits than its factorization.

40216709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24499.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 40216709 is about 6341.6645291280. The cubic root of 40216709 is about 342.6116892921.

The spelling of 40216709 in words is "forty million, two hundred sixteen thousand, seven hundred nine".