40516209 has 12 divisors (see below), whose sum is σ = 59769216. Its totient is φ = 26435832.

The previous prime is 40516207. The next prime is 40516211. The reversal of 40516209 is 90261504.

40516209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40516207) and next prime (40516211).

It is not a de Polignac number, because 40516209 - 2¹ = 40516207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40516207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47469 + ... + 48314.

It is an arithmetic number, because the mean of its divisors is an integer number (4980768).

Almost surely, 2^40516209 is an apocalyptic number.

It is an amenable number.

40516209 is a deficient number, since it is larger than the sum of its proper divisors (19253007).

40516209 is a wasteful number, since it uses less digits than its factorization.

40516209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95836 (or 95833 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40516209 is about 6365.2344025967. The cubic root of 40516209 is about 343.4600806632.

The spelling of 40516209 in words is "forty million, five hundred sixteen thousand, two hundred nine".