40830509 has 2 divisors, whose sum is σ = 40830510. Its totient is φ = 40830508.

The previous prime is 40830443. The next prime is 40830527. The reversal of 40830509 is 90503804.

40830509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 10745284 = 5485^2 + 3278^2 .

It is a cyclic number.

It is not a de Polignac number, because 40830509 - 2⁸ = 40830253 is a prime.

It is a Chen prime.

It is equal to p_2481149 and since 40830509 and 2481149 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40830529) 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 as a sum of consecutive naturals, namely, 20415254 + 20415255.

It is an arithmetic number, because the mean of its divisors is an integer number (20415255).

Almost surely, 2^40830509 is an apocalyptic number.

It is an amenable number.

40830509 is a deficient number, since it is larger than the sum of its proper divisors (1).

40830509 is an equidigital number, since it uses as much as digits as its factorization.

40830509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40830509 is about 6389.8755073945. The cubic root of 40830509 is about 344.3459118517.

The spelling of 40830509 in words is "forty million, eight hundred thirty thousand, five hundred nine".